All-optical and nonlinear signal processing

Martijn de Sterke, Benjamin Eggleton, Michael Lamont, Mark Pelusi, Jochen Schroeder

All-optical signal processing
To operate at very high data rates (160Gb/s and beyond), optical communications systems need to process signals in the optical domain to overcome opto-electronic conversion speed limitations. Nonlinear signal processing involves the control of light by light using nonlinear optical materials.

Nonlinear medium: Chalcogenide glasses
While silica fiber offers long interactions which enhance nonlinear effects, it is not ideal for creating compact devices. Chalcogenide glasses, based on the sulfur, selenium and tellurium, exhibit ultrafast (sub-picosecond) nonlinear optical processes several hundred times stronger than silica. We use commercial As2Se3 single mode fiber and low-loss As2S3 channel waveguides (up to 24 cm in length, wrapped onto a photonic chip) fabricated at CUDOS@ANU.

Wavelength conversion
In wavelength division multiplexed networks, an optical circuit link uses the same wavelength from source to destination on all the intermediate nodes. Wavelength conversion alleviates this constraint, improving network efficiency and flexibility. We have demonstrated 80 Gb/s wavelength conversion within chalcogenide glass waveguides using nonlinear cross phase modulation.

Fig 1): Waveguide output spectra showing  input 80 Gb/s signal andcross-phase modulated CW probe

Fig 2): 40 Gb/s system measurements show low penalty.

Optical signal regeneration
Signals require regeneration due to distortion caused by loss, dispersion, noise and cross-talk. Self-phase modulation sideband filtering replaces opto-electronic regenerators by mapping signal amplitude variations onto wavelength and using an optical filter to selectively block noise. We conducted research on such devices, implemented in both silica as well as chalcogenide glass waveguides.

Fig 2): Nonlinear power transfer function using As2Se3 fiber

Fig 3): Mamyshev regenerator schematic. Part a) shows the effect of SPM on a high intensity pulse, allowing for a device with apower dependent transfer function.

Figure 4): Integrated chalcogenide waveguide Mamyshev regenerator - a possible signal processing component of the photonic chip

All-optical demultiplexing
While interleaving several optical signals to create an optical time division multiplexed channel is relatively simple, demultiplexing is significantly harder. We have achieved all-optical demultiplexing nonlinear mixing between a high data rate signal (160 Gb/s) with a low duty cycle (10 GHz) optical ‘pump’ in a chalcogenide glass waveguide.

Dynamic Wavelength Processor
As part of an ARC Linkage project we are working to demonstrate all-optical signal processing functions based on linear effects using an Optium Corporation Dynamic Wavelength Processor. Recent results include an OFC post-deadline paper on tunable dispersion trimming at 80 Gbit/s per channel.

Long-haul, advanced modulation format transmission lab
We use the high speed optical transmission lab to characterise our experimental devices. This upgraded lab now is capable of:

• Device testing with 320 Gb/s signals.

• Conduct experiments comparable to long haul links (i.e. trans-pacific) using a recirculating loop of optical fibre (~100km).

• Advanced modulation formats based on differential phase shift keying.

Publications

1. M. Ebnali-Heidari, C. Monat, C. Grillet, and M. K Moravvej-Farshi,
   "A proposal for enhancing four-wave mixing in slow light engineered photonic crystal waveguides and its application to optical regeneration,"
   Opt. Express 17, 18340-18353 (2009)
2. C. Xiong, E. Magi, F. Luan, A. Tuniz, S. Dekker, J. S. Sanghera, L. B. Shaw, I. D. Aggarwal, and B. J. Eggleton,
   "Characterization of picosecond pulse nonlinear propagation in chalcogenide As2S3 fiber,"
   Appl. Opt. 48, 5467-5474 (2009)
3. D. Pudo, B. Corcoran, C. Monat, M. Pelusi, D.J. Moss, B.J. Eggleton, T.P. White, L. O'Faolain, T.F. Krauss
   "Investigation of slow light enhanced nonlinear transmission for all-optical regeneration in silicon photonic crystal waveguides at 10 Gbit/s"
   Photonics and Nanostructures: Fundementals and Applications, doi:10.1016/j.photonics.2009.08.002, (2009)
4. M. D. Pelusi, T. D. Vo, F. Luan, S. J. Madden, D.-Y. Choi, D. A. P. Bulla, B. Luther-Davies, and B. J. Eggleton,
   "Terahertz bandwidth RF spectrum analysis of femtosecond pulses using a chalcogenide chip,"
   Opt. Express 17, 9314-9322 (2009)
5. Roelens, M. A. F.; Bolger, J. A.; Williams, D.; Frisken, S. J.; Baxter, G. W.; Clarke, A. M.; Eggleton, B. J.
   "Flexible and Reconfigurable Time-Domain Demultiplexing of Optical Signals at 160 Gb/s,"
   Photonics Technology Letters, IEEE , vol.21, no.10, pp.618-620, May15, 2009
6. B. Corcoran, C. Monat, C. Grillet, D. J. Moss, B. J. Eggleton, T. P. White, L. O'Faolain & T. F. Krauss
   "Green light emission in silicon through slow-light enhanced third-harmonic generation in photonic-crystal waveguides "
   Nature Photonics, doi:10.1038/nphoton.2009.28 (2009)
7. Irina V. Kabakova, Bill Corcoran, Jeremy A. Bolger, Martijn de Sterke, and Benjamin J. Eggleton,
   "All-optical self-switching in optimized phase-shifted fiber Bragg grating,"
   Opt. Express 17, 5083-5088 (2009)
8. Feng Luan, Mark D. Pelusi, Michael R. E. Lamont, Duk-Yong Choi, Steve Madden, Barry Luther-Davies, and Benjamin J. Eggleton,
   "Dispersion engineered As2S3 planar waveguides for broadband four-wave mixing based wavelength conversion of 40 Gb/s signals,"
   Opt. Express 17, 3514-3520 (2009)
9. Mark Pelusi, Feng Luan, Trung D. Vo, Michael R. E. Lamont, Steven J. Madden, Douglas A. Bulla, Duk-Yong Choi, Barry Luther-Davies & Benjamin J. Eggleton
   "Photonic-chip-based radio-frequency spectrum analyser with terahertz bandwidth",
   Nature Photonics, doi:10.1038/nphoton.2009.001 (2009)
10. Christelle Monat, Bill Corcoran, Majid Ebnali-Heidari, Christian Grillet, Benjamin J. Eggleton, Thomas P. White, Liam O'Faolain, and Thomas F. Krauss, "Slow light enhancement of nonlinear effects in silicon engineered photonic crystal waveguides,"
    Opt. Express 17, 2944-2953 (2009)
11. Michael Galili, Jing Xu, Hans C. Mulvad, Leif K. Oxenløwe, Anders T. Clausen, Palle Jeppesen, Barry Luther-Davis, Steve Madden, Andrei Rode, Duk-Yong Choi, Mark Pelusi, Feng Luan, and Benjamin J. Eggleton,
    "Breakthrough switching speed with an all-optical chalcogenide glass chip: 640 Gbit/s demultiplexing,"
    Opt. Express 17, 2182-2187 (2009)
12. M. R. Lamont, B. Luther-Davies, D. Choi, S. Madden, X. Gai, and B. J. Eggleton,
    "Net-gain from a parametric amplifier on a chalcogenide optical chip,"
    Opt. Express 16, 20374-20381 (2008)
13. A. Tuniz, G. Brawley, D. J. Moss, and B. J. Eggleton, "Two-photon absorption
    effects on Raman gain in single mode As2Se3 chalcogenide glass fiber," Opt.
    Express 16, 18524-18534 (2008)
14. H. C. Nguyen, D. Yeom, E. C. Mägi, B. T. Kuhlmey, C. M. de Sterke, and B. J. Eggleton
    "Nonlinear switching using long-period gratings in As2Se3 chalcogenide fiber"
    J. Opt. Soc. Am. B 25, 1393-1401 (2008)
15. M. D. Pelusi, F. Luan, E. Magi, M. R. Lamont, D. J. Moss, B. J. Eggleton, J. S. Sanghera, L. B. Shaw, and I. D. Aggarwal,
    "High bit rate all-optical signal processing in a fiber photonic wire,"
    Opt. Express 16, 11506-11512 (2008)
16. 160-Gb/s Optical Time-Division Demultiplexing Using a Mach–Zehnder Modulator in a Fiber Loop
    M Pelusi
    IEEE Photonics Technology Letters, vol.20, no.12, 2008
17. Error-free 640 Gbit/s demultiplexing using a chalcogenide planar waveguide chip
    Jing Xu, Michael Galili, Hans C.H. Mulvad, Leif K. Oxenøwe, Anders T. Clausen, Palle Jeppesen, Barry Luther-Davis, Steve Madden, Andrei Rode, Duk-Yong Choi, Mark Pelusi, Feng Luan and Benjamin J. Eggleton
    OECC/ACOFT Post-Deadline Papers Technical Digest, 2008
18. Pelusi, M. D.; Ta'eed, V. G.; Fu, L.; MÄgi, E.; Lamont, M. R. E.; Madden, S.; Choi, D.-Y.; Bulla, D. A. P.; Luther-Davies, B.; Eggleton, B. J.
    "Applications of Highly-Nonlinear Chalcogenide Glass Devices Tailored for High-Speed All-Optical Signal Processing"
    Selected Topics in Quantum Electronics, IEEE Journal of , vol.14, no.3, pp.529-539, May-june 2008
19. M. A. Roelens, J. A. Bolger, D. Williams, and B. J. Eggleton,
    "Multi-wavelength synchronous pulse burst generation with a wavelength selective switch,"
    Opt. Express 16, 10152-10157 (2008)
20. Christian Grillet, Shu Ning Bian, Eric C. Magi, and Benjamin J. Eggleton
    "Fiber taper coupling to chalcogenide microsphere modes"
    Appl. Phys. Lett. 92, 171109 (2008)
21. D. -I. Yeom, E. C. Mägi, M. R. E. Lamont, M. A. F. Roelens, L. Fu, and B. J. Eggleton
    "Low-threshold supercontinuum generation in highly nonlinear chalcogenide nanowires"
    Opt. Lett. 33, 660-662 (2008)
22. H. C. Nguyen, D. I. Yeom, E. C. Mägi, L. B. Fu, B. T. Kuhlmey, C. M. de Sterke, and B. J. Eggleton
    "Nonlinear long-period gratings in As2Se3 chalcogenide fiber for all-optical switching,"
    Appl. Phys. Lett. 92, 101127 (2008).
23. Roelens, M. A. F.; Frisken, S.; Bolger, J. A.; Abakoumov, D.; Baxter, G.; Poole, S.; Eggleton, B. J.
    "Dispersion Trimming in a Reconfigurable Wavelength Selective Switch,"
    Lightwave Technology, Journal of , vol.26, no.1, pp.73-78, Jan.1, 2008
24. Libin Fu, Vahid G. Ta’eed, Eric C. Mägi, Ian C. M. Littler, Mark D. Pelusi, Michael R. E. Lamont, Alexander Fuerbach, Hong C. Nguyen, Dong-Il Yeom and Benjamin J. Eggleton
    "Highly nonlinear chalcogenide fibres for all-optical signal processing"
    Optical and Quantum Electronics, DOI 10.1007/s11082-007-9180-7, 2008
25. Fu, L.B.; Pelusi, M.D.; Magi, E.C.; Taeed, V.G.; Eggleton, B.J.
    "Broadband all-optical wavelength conversion of 40 Gbit/s signals in nonlinearity enhanced tapered chalcogenide fibre"
    Electronics Letters vol.44, no.1, pp.44-46, January 3 2008
26. Thomas Grujic, Hong C. Nguyen, Michael R.E. Lamont, C. Martijn de Sterke and Benjamin J. Eggleton
    "All-optical regeneration based on a nonlinear long period grating"
    Optics Communications, Available online 26 November 2007.
27. V. Ta'eed, M. D. Pelusi, B. J. Eggleton, D. -Y. Choi, S. madden, D. Bulla, and B. Luther-Davies,
    "Broadband wavelength conversion at 40 Gb/s using long serpentine As2S3 planar waveguides,"
    Opt. Express 15, 15047-15052 (2007)
28. S. J. Madden, D. -Y. Choi, D. A. Bulla, A. V. Rode, B. Luther-Davies, V. G.Ta'eed, M. D. Pelusi, and B. J. Eggleton
    "Long, low loss etched As2S3 chalcogenide waveguides for all-optical signal regeneration"
    Opt. Express 15, 14414-14421 (2007)
29. Benjamin J. Eggleton, Vahid G. Ta’eed and Barry Luther-Davies
    "Chalcogenide Glass, Advanced for All-Optical Processing"
    Photonics Spectra, Sept 2007
30. Pelusi, M. D.; Ta'eed, V. G.; Lamont, M. R. E.; Madden, S.; Choi, D.-Y.; Luther-Davies, B.; Eggleton, B. J.
    "Ultra-High Nonlinear As2S3 Planar Waveguide for 160-Gb/s Optical Time-Division Demultiplexing by Four-Wave Mixing,"
    Photonics Technology Letters, IEEE , vol.19, no.19, pp.1496-1498, Oct.1, 2007
31. Lamont, M.R.E.; Ta'eed, V.G.; Roelens, M.A.F.; Moss, D.J.; Eggleton, B.J.; Choi, D.-Y.; Madden, S.; Luther-Davies, B.,\
    "Error-free wavelength conversion via cross-phase modulation in 5cm of As2S3 chalcogenide glass rib waveguide,\"
    Electronics Letters , vol.43, no.17, pp.945-947, August 16 2007
32. E. C. Mägi, L. B. Fu, H. C. Nguyen, M. R. Lamont, D. I. Yeom, and B. J.
    Eggleton, "Enhanced Kerr nonlinearity in sub-wavelength diameter As2Se3
    chalcogenide fiber tapers," Opt. Express 15, 10324-10329 (2007)
33. V. Ta'eed, N. J. Baker, L. Fu, K. Finsterbusch, M. R. E. Lamont, D. J. Moss, H. C. Nguyen, B. J. Eggleton, D. -Y. Choi, S. Madden, and B. Luther-Davies
    "Ultrafast all-optical chalcogenide glass photonic circuits"
    Opt. Express 15, 9205-9221 (2007)
34. M. R. Lamont, C. M. de Sterke, and B. J. Eggleton
    "Dispersion engineering of highly nonlinear As2S3 waveguides for parametric gain and wavelength conversion"
    Opt. Express 15, 9458-9463 (2007)
35. D. -Y. Choi, S. Madden, A. Rode, R. Wang, B. Luther-Davies, N. J. Baker,
    and B. J. Eggleton, "Integrated shadow mask for sampled Bragg gratings in
    chalcogenide (As2S3) planar waveguides," Opt. Express 15, 7708-7712 (2007)
36. J.A. Bolger, I.C.M. Littler and B.J. Eggleton
    Optimisation of superimposed chirped fibre Bragg gratings for the generation of ultra-high speed optical pulse bursts
    Optics Communications, Volume 271, Issue 2, 15 March 2007, Pages 524-531
37. C. Smith, C. Grillet, S. Tomljenovic-Hanic, E.C. Magi, D. Moss, B.J. Eggleton, D. Freeman, S. Madden and B. Luther-Davies
    "Characterisation of chalcogenide 2D photonic crystal waveguides and nanocavities using silica fibre nanowires"
    Physica B: Condensed Matter, Volume 394, Issue 2
38. K. Finsterbusch, N. J. Baker, V. G. Ta'eed, B. J. Eggleton, D. -Y. Choi, S.
    Madden, and B. Luther-Davies, "Higher-order mode grating devices in As2S3
    chalcogenide glass rib waveguides," J. Opt. Soc. Am. B 24, 1283-1290 (2007)
39. D. J. Moss, V.G. Ta’eed, C.Grillet, M. Shokooh-Saremi1, L.B. Fu, M. Rochette, E.C. Magi,
    I.C.M. Littler, B.J. Eggleton, Y. Ruan, D. Freeman, S. Madden, and B. Luther-Davies
    Photonic integrated circuits in chalcogenide glass for all-optical signal processing
    Photonics West, Invited Paper, (2007)
40. V. G. Ta'eed, M. R. E. Lamont, D. J. Moss, B. J. Eggleton, D. -Y. Choi, S. Madden, and B. Luther-Davies
    All optical wavelength conversion via cross phase modulation in chalcogenide glass rib waveguides
    Opt. Express 14, 11242-11247 (2006)
41. V. G. Ta'eed, L. Fu, M. Pelusi, M. Rochette, I. C. Littler, D. J. Moss, and B. J. Eggleton
    Error free all optical wavelength conversion in highly nonlinear As-Se chalcogenide glass fiber
    Opt. Express 14, 10371-10376 (2006)
42. M. R. E. Lamont, L. Fu, M. Rochette, D. J. Moss, and B. J. Eggleton
    2R optical regenerator in As2Se3 chalcogenide fiber characterized by a frequency-resolved optical gating analysis
    Appl. Opt. 45, 7904-7907 (2006)
43. Lamont, M.R.E.; Rochette, M.; Moss, D.J.; Eggleton, B.J.;
    Two-Photon Absorption Effects on Self-Phase-Modulation-Based 2R Optical Regeneration
    Photonics Technology Letters, IEEE Volume 18, Issue 10, May 15 2006 Page(s):1185 - 1187
44. Joe T. Mok, C. Martijn de Sterke, Ian C. M. Littler and Benjamin J. Eggleton
    Dispersionless slow light using gap solitons
    Nature Physics, Published online: 22 October 2006
45. N. J. Baker, H. W. Lee, I. C. Littler, C. M. de Sterke, B. J. Eggleton, D.-Y. Choi, S. Madden, and B. Luther-Davies
    Sampled Bragg gratings in chalcogenide (As2S3) rib-waveguides
    Opt. Express 14, 9451-9459 (2006)
46. M. Rochette, L. Fu; V. Ta'eed, D. J. Moss, B. J. Eggleton
    2R optical regeneration: an all-optical solution for BER improvement
    IEEE Journal of Selected Topics in Quantum Electronics 12, 736- 744, (2006)
47. I.C. M. Littler, L. B. Fu, E. C. Mägi, D. Pudo, and B. J. Eggleton
    Widely tunable, acousto-optic resonances in Chalcogenide As2Se3 fiber
    Opt. Express 14, 8088-8095 (2006)
48. Ian C.M. Littler, Martin Rochette and Benjamin J. Eggleton
    Impact of chromatic dispersion and group delay ripple on self-phase modulation based optical regenerators
    Optics Communications, Volume 265, Issue 1, 1 September 2006, Pages 95-99.
49. Ian C.M. Littler, Libin Fu, Michael Lee and Benjamin J. Eggleton
    Investigation of single harmonic group delay ripple on picosecond pulses using FROG: Tailoring pulse bursts
    Optics Communications, Volume 265, Issue 1, 1 September 2006, Pages 147-152.
50. S. Tomljenovic-Hanic, M. J. Steel, C. M. de Sterke and J. Salzman:
    Diamond based photonic crystal microcavities
    Optics Express 14, 3556-3562 (2006)
51. S. Tomljenovic-Hanic, C. M. de Sterke and M. J. Steel
    Packing density of conventional waveguides and photonic crystal waveguides
    Optics Communications, Vol. 259, 142-148 (2006)
52. C. Grillet, C. Smith, D. Freeman, S. Madden, B. Luther-Davies, E. Magi, D. Moss, and B. Eggleton
    Efficient coupling to chalcogenide glass photonic crystal waveguides via silica optical fiber nanowires
    Opt. Express 14, 1070-1078 (2006)
53. M. Rochette, J. L. Blows, and B. J. Eggleton
    3R optical regeneration: an all-optical solution with BER improvement
    Opt. Express 14, 6414-6427 (2006)
54. Ta'eed, V.G.; Shokooh-Saremi, M.; Fu, L.; Littler, I.C.M.; Moss, D.J.; Rochette, M.; Eggleton, B.J.; Yinlan Ruan; Luther-Davies, B.,
    Self-phase modulation-based integrated optical regeneration in chalcogenide waveguides
    Selected Topics in Quantum Electronics, IEEE Journal of , vol.12, no.3pp. 360- 370, May-June 2006
55. Magne, J. Bolger, J. Rochette, M. LaRochelle, S. Chen, L.R. Eggleton, B.J. Azana, J
    Generation of a 4$times$100 GHz Pulse-Train From a Single-Wavelength 10-GHz Mode-Locked Laser Using Superimposed Fiber Bragg Gratings and Nonlinear Conversion
    Lightwave Technology, Journal of, May 2006 Volume: 24, Issue: 5
56. Nguyen, H.C.; Finsterbusch, K.; Moss, D.J.; Eggleton, B.J.
    Dispersion in nonlinear figure of merit of As2Se3 chalcogenide fibre
    Electronics Letters , vol.42, no.10pp. 571- 572, May 2006
57. Lamont, M.R.E.; Rochette, M.; Moss, D.J.; Eggleton, B.J.;
    Two-Photon Absorption Effects on Self-Phase-Modulation-Based 2R Optical Regeneration
    Photonics Technology Letters, IEEE Volume 18, Issue 10, May 15 2006 Page(s):1185 - 1187
58. D. Pudo, E. C. Mägi, and B. J. Eggleton
    Long-period gratings in chalcogenide fibers
    Opt. Express 14, 3763-3766 (2006)
59. Justin L. Blows, Peifang Hu and Benjamin J. Eggleton
    Differential group delay monitoring using an all-optical signal spectrum-analyser
    Optics Communications, Volume 260, Issue 1, 1 April 2006, Pages 288-291
60. Libin Fu, Alexander Fuerbach, Ian C. M. Littler, and Benjamin J. Eggleton
    Efficient optical pulse compression using chalcogenide single-mode fibers
    Appl. Phys. Lett. 88, 081116 (2006)
61. Adams, R.; Rochette, M.; Ng, T.T.; Eggleton, B.J.
    All-Optical In-Band OSNR Monitoring at 40 Gb/s Using a Nonlinear Optical Loop Mirror
    Photonics Technology Letters, IEEE , vol.18, no.3pp. 469- 471, Feb. 1 2006
62. C. Martijn de Sterke and Benjamin J. Eggleton
    Spectral Talbot effect: interpretation via band diagrams,
    Optics Communications, 248(1-3), 117-121 (2005)
63. V. Ta'eed, M. Shokooh-Saremi, L. Fu, D. Moss, M. Rochette, I. Littler, B. Eggleton, Y. Ruan, and B. Luther-Davies
    Integrated all-optical pulse regenerator in chalcogenide waveguides
    Opt. Lett. 30, 2900-2902 (2005)
64. L. B. Fu, M. Rochette, V. G. Ta'eed, D. J. Moss, and B. J. Eggleton
    Investigation of self-phase modulation based optical regeneration in single mode As2Se3 chalcogenide glass fiber
    Opt. Express 13, 7637- (2005)
65. M. Rochette, I.C.M. Littler, R.W. McKerracher, B.J. Eggleton
    A Dispersionless and Bandwidth-Adjustable FBG Filter for Reconfigurable 2R-Regeneration
    Photonics Technology Letters, IEEE Volume 17, Issue 8, Aug. 2005 Page(s):1680 - 1682
66. Ng TT, Blows JL, Rochette M, Bolger JA, Littler I, Eggleton BJ
    In-band OSNR and chromatic dispersion monitoring using a fibre optical parametric amplifier
    OPTICS EXPRESS 13 (14): 5542-5552 JUL 11 2005.
67. Ng TT, Blows JL, Eggleton BJ
    In-band OSNR monitoring using fibre optical parametric amplifier
    Electronics Letters, 41 (6), 352-353 (2005).
68. Rochette, M.; Kutz, J.N.; Blows, J.L.; Moss, D.; Mok, J.T.; Eggleton, B.J.
    Bit-error-ratio improvement with 2R optical regenerators
    Photonics Technology Letters, IEEE, 17(4) 908 - 910 (2005).
69. J.A. Bolger, P. Hu, J.T. Mok, J.L. Blows, B.J. Eggleton
    Talbot self-imaging and cross-phase modulation for generation of tunable high repetition rate pulse trains
    Optics Communications, v249 pp431-439 (2005).
70. Ian C.M. Littler, Martin Rochette & Benjamin Eggleton
    Adjustable bandwidth dispersionless bandpass FBG optical filter
    Optics Express 13, 3397-3407, (2005).
71. Ng, T.T.; Blows, J.L.; Mok, J.T.; McKerracher, R.W.; Eggleton, B.J.
    Cascaded Four-Wave Mixing in Fiber Optical Parametric Amplifiers: Application to Residual Dispersion Monitoring
    Journal of Lightwave Technology, 23 (2), 818 - 826 (2005).
72. Moss, D.J.; Miao, Y.; Ta'eed, V.; Magi, E.C.; Eggleton, B.J.
    Coupling to high-index waveguides via tapered microstructured optical fibre
    Electronics Letters, Vol.41, Issue 17, Pg 23-24, 18 August 2005.
73. Shokooh-Saremi, M.; Ta'eed, V.G.; Littler, I.C.M.; Moss, D.J.; Eggleton, B.J.; Ruan, Y.; Luther-Davies, B.
    Ultra-strong, well-apodised Bragg gratings in chalcogenide rib waveguides
    Electronics Letters Volume 41, Issue 13, 23 Jun 2005 Page(s):21 - 22
74. D.J. Moss, L. Fu, I. Littler, and B. J. Eggleton
    Ultra-fast all-optical modulation via two-photon absorption in silicon-on-insulator waveguides
    Electron. Lett. 41, 320-321 (2005)
75. J. T. Mok, J. L. Blows, and B. J. Eggleton
    Investigation of group delay ripple distorted signals transmitted through all-optical 2R regenerators
    Optics Express, 12, 4411-4422 (2004).
76. R. McKerracher, J.L. Blows and C.M. deSterke
    Systematic analysis of wavelength conversion in a fiber optical parametric device with a single, tunable pump
    Optics Express 12, 2810-2815 (2004)
77. Blows JL
    Design strategy for controlling four-wave mixing-induced crosstalk between channels in a fibre optical parametric amplifier
    Optics Communications 236 (1-3): 115-122 JUN 1 2004
78. Blows JL, Hu PF
    Cross-talk-induced limitations of two-pump optical fiber parametric amplifiers
    Journal of the Optical Society of America B-Optical Physics 21 (5): 989-995 MAY 2004
79. D. J. Moss, V. G. Ta'eed, B. J. Eggleton, D. Freeman, S. Madden, M. Samoc, B. Luther-Davies, S. Janz, and D. -. Xu
    Bragg gratings in silicon-on-insulator waveguides by focused ion beam milling
    Applied Physics Letters, 85, 4860-4861 (2004).
80. V. G. Ta'eed, D. J. Moss, B. J. Eggleton, D. Freeman, S. Madden, M. Samoc, B. Luther-Davies, S. Janz, and D. -. Xu
    Higher order mode conversion via focused ion beam milled Bragg gratings in Silicon-on-Insulator waveguides
    Optics Express 12, 5274-5284 (2004).
81. Ng TT, Blows JL, Mok JT, Eggleton B.J.
    Simultaneous residual chromatic dispersion monitoring and frequency conversion with gain using a parametric amplifier
    Optics Express 11 (23): 3122-3127 NOV 17 2003
82. R. McKerracher, J. Blows and M.C. deSterke
    Wavelength conversion bandwidth in fibre based optical parametric amplifiers
    Optics Express 11, 1002-1007 (2003)
83. Sumetsky M, Eggleton BJ
    Modeling and optimization of complex photonic resonant cavity circuits
    Optics Express 11 (4): 381-391 FEB 24 2003.
84. White TP, Botten LC, McPhedran RC, et al.
    Ultracompact resonant filters in photonic crystals
    Optics Letters 28 (24): 2452-2454 DEC 15 2003.
85. T.P White, C. Martijn de Sterke, R.C. McPhedran, T. Huang, and L.C. Botten
    Enhanced response of Mach-Zender interferometers in photonic crystals
    Optics Express 12, 3035-3045 (2004)