Phase shift keyed systems based on a gain switched laser transmitter

Article English OPEN
Anandarajah, Prince M. ; Shi, Kai ; O'Carroll, John ; Kaszubowska, Aleksandra ; Phelan, Richard ; Barry, Liam P. ; Ellis, Andrew D. ; Perry, Philip ; Reid, Douglas ; Kelly, Brian ; O'Gorman, James (2009)

Return-to-Zero (RZ) and Non-Return-to-Zero (NRZ) Differential Phase Shift Keyed (DPSK) systems require cheap and optimal transmitters for widespread implementation. The authors report on a gain switched Discrete Mode (DM) laser that can be employed as a cost efficient transmitter in a 10.7 Gb/s RZ DPSK system and compare its performance to that of a gain switched Distributed Feed-Back (DFB) laser. Experimental results show that the gain switched DM laser readily provides error free performance and a receiver sensitivity of -33.1 dBm in the 10.7 Gbit/s RZ DPSK system. The standard DFB laser on the other hand displays an error floor at 10(-1) in the same RZ DPSK system. The difference in performance, between the two types of gain switched transmitters, is analysed by investigating their linewidths. We also demonstrate, for the first time, the generation of a highly coherent gain switched pulse train which displays a spectral comb of approximately 13 sidebands spaced by the 10.7 GHz modulation frequency. The filtered side-bands are then employed as narrow linewidth Continuous Wave (CW) sources in a 10.7 Gb/s NRZ DPSK system.
  • References (15)
    15 references, page 1 of 2

    11. C. Schubert, S. Ferber, M. Kroh, C. Schmidt-Langhorst, R. Ludwig, B. Huttl, R. Kaiser and H. G. Weber, “40 GHz Semiconductor Mode Locked Laser Pulse Source for 160 Gbit/s RZ-DPSK Data Transmission,” in proc. ECOC 2005, Tu1.5.3, pp. 167-168.

    12. D. D. Marcenac, A. D. Ellis, and D. G. Moodie, “80 Gbit/s OTDM using Electroabsorption Modulators,” Electron. Lett. 34(1), 101-103 (1998).

    13. A. D. Ellis, R. J. Manning, I. D. Phillips, and D. Nesset, “1.6 ps Pulse Generation at 40 GHz in Phaselocked Ring Laser Incorporating Highly Nonlinear Fibre for Application to 160 Gbit/s OTDM Networks,” Electron. Lett. 35(8), 645-646 (1999).

    14. S. Arahira, and Y. Ogawa, “160 Gb/s OTDM Signal Source with 3R Function Utilizing Ultrafast Mode-locked Laser Diodes and Modified NOLM,” IEEE Photon. Technol. Lett. 17(5), 992-994 (2005).

    15. P. M. Anandarajah, C. Guignard, A. Clarke, D. Reid, M. Rensing, L. P. Barry, G. Edvell, and J. D. Harvey, “Optimised Pulse Source Employing an Externally Injected Gain-Switched Laser Diode in Conjunction with a Non-linearly Chirped Grating,” IEEE J. Sel. Top. Quantum Electron. 12(2), 255-264 (2006).

    16. P. Anandarajah, P. J. Maguire, A. Clarke, and L. P. Barry, “Self-Seeding of a Gain-Switched Integrated DualLaser Source for the Generation of Highly Wavelength-Tunable Picosecond Optical Pulses,” IEEE Photon. Technol. Lett. 16(2), 629-631 (2004).

    17. A. Clarke, P. Anandarajah, and L. P. Barry, “Generation of Widely Tunable Picosecond Pulses with Large SMSR by Externally Injecting a Gain Switched Dual Laser Source,” IEEE Photon. Technol. Lett. 16(10), 2344-2346 (2004).

    18. C. Herbert, D. Jones, A. Kaszubowska-Anandarajah, B. Kelly, M. Rensing, J. O'Carroll, R. Phelan, P. Anandarajah, P. Perry, L. P. Barry, and J. O'Gorman, “Discrete Mode Lasers for Communication Applications,” IET Optoelectron. 3(1), 1-17 (2009).

    19. P. M. Anandarajah, L. P. Barry, A. M. Kaszubowska-Anandarajah, J. O'Gorman, J. O'Carroll, C. Herbert, R. Phelan, and A. F. Duke, “Highly Coherent Picosecond Pulse Generation with Sub-PS Jitter and High SMSR by Gain Switching Discrete Mode Laser Diodes at 10 GHz Line Rate,” in Optical Fiber Communications Conference and Exposition and The National Fiber Optic Engineers Conference on CD-ROM (Optical Society of America, San Diego, CA, 2009), OWj3.

    20. A. D. Ellis, F. C. Garcia-Gunning, and T. Healy, “Coherent WDM: The Achievement of High Information Spectral Density through Phase Control within the Transmitter,”in Optical Fiber Communications Conference and Exposition and The National Fiber Optic Engineers Conference on CD-ROM (Optical Society of America, Los Angeles, CA, 2005), OThR4.

  • Metrics
    0
    views in OpenAIRE
    0
    views in local repository
    2
    downloads in local repository

    The information is available from the following content providers:

    From Number Of Views Number Of Downloads
    Aston Publications Explorer - IRUS-UK 0 2
Share - Bookmark