Semiconductor optical amplifier-based nonlinear optical-loop mirror with feedback

W.M. Wong, K.J. Blow

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The behavior of a semiconductor optical amplifier (SOA)-based nonlinear loop mirror with feedback has been investigated as a potential device for all-optical signal processing. In the feedback device, input signal pulses (ones) are injected into the loop, and amplified reflected pulses are fed back into the loop as switching pulses. The feedback device has two stable modes of operation - block mode, where alternating blocks of ones and zeros are observed, and spontaneous clock division mode, where halving of the input repetition rate is achieved. Improved models of the feedback device have been developed to study its performance in different operating conditions. The feedback device could be optimized to give a choice of either of the two stable modes by shifting the arrival time of the switching pulses at the SOA. Theoretically, it was found possible to operate the device at only tens of fJ switching pulse energies if the SOA is biased to produce very high gain in the presence of internal loss. The clock division regime arises from the combination of incomplete SOA gain recovery and memory of the startup sequence that is provided by the feedback. Clock division requires a sufficiently high differential phase shift per unit differential gain, which is related to the SOA linewidth enhancement factor.
Original languageEnglish
Title of host publicationWDM and Photonic Switching Devices for Network Applications III
EditorsRay T. Chen, Joseph C. Chon
PublisherSPIE
Pages119-133
Number of pages15
DOIs
Publication statusPublished - 7 Jun 2002
EventWDM and Photonic Switching Devices for Network Applications III - San Jose, CA, United States
Duration: 18 Jan 2002 → …

Publication series

NameSPIE proceedings
PublisherSPIE
Number4653
ISSN (Print)0277-786X

Conference

ConferenceWDM and Photonic Switching Devices for Network Applications III
CountryUnited States
CitySan Jose, CA
Period18/01/02 → …

Fingerprint

Semiconductor optical amplifiers
light amplifiers
Mirrors
mirrors
Feedback
Clocks
clocks
division
pulses
Optical signal processing
Phase shift
Linewidth
high gain
arrivals
optical communication
signal processing
repetition
phase shift
Data storage equipment
recovery

Bibliographical note

Wai Mun Wong and Keith J. Blow "Semiconductor optical amplifier-based nonlinear optical-loop mirror with feedback", Proc. SPIE 4653, WDM and Photonic Switching Devices for Network Applications III, 119 (June 7, 2002);

Copyright 2002 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

http://dx.doi.org/10.1117/12.469641

Keywords

  • nonlinear optical loop mirror
  • semiconductor optical amplifier
  • optical switching

Cite this

Wong, W. M., & Blow, K. J. (2002). Semiconductor optical amplifier-based nonlinear optical-loop mirror with feedback. In R. T. Chen, & J. C. Chon (Eds.), WDM and Photonic Switching Devices for Network Applications III (pp. 119-133). (SPIE proceedings; No. 4653). SPIE. https://doi.org/10.1117/12.469641
Wong, W.M. ; Blow, K.J. / Semiconductor optical amplifier-based nonlinear optical-loop mirror with feedback. WDM and Photonic Switching Devices for Network Applications III. editor / Ray T. Chen ; Joseph C. Chon. SPIE, 2002. pp. 119-133 (SPIE proceedings; 4653).
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Wong, WM & Blow, KJ 2002, Semiconductor optical amplifier-based nonlinear optical-loop mirror with feedback. in RT Chen & JC Chon (eds), WDM and Photonic Switching Devices for Network Applications III. SPIE proceedings, no. 4653, SPIE, pp. 119-133, WDM and Photonic Switching Devices for Network Applications III, San Jose, CA, United States, 18/01/02. https://doi.org/10.1117/12.469641

Semiconductor optical amplifier-based nonlinear optical-loop mirror with feedback. / Wong, W.M.; Blow, K.J.

WDM and Photonic Switching Devices for Network Applications III. ed. / Ray T. Chen; Joseph C. Chon. SPIE, 2002. p. 119-133 (SPIE proceedings; No. 4653).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - The behavior of a semiconductor optical amplifier (SOA)-based nonlinear loop mirror with feedback has been investigated as a potential device for all-optical signal processing. In the feedback device, input signal pulses (ones) are injected into the loop, and amplified reflected pulses are fed back into the loop as switching pulses. The feedback device has two stable modes of operation - block mode, where alternating blocks of ones and zeros are observed, and spontaneous clock division mode, where halving of the input repetition rate is achieved. Improved models of the feedback device have been developed to study its performance in different operating conditions. The feedback device could be optimized to give a choice of either of the two stable modes by shifting the arrival time of the switching pulses at the SOA. Theoretically, it was found possible to operate the device at only tens of fJ switching pulse energies if the SOA is biased to produce very high gain in the presence of internal loss. The clock division regime arises from the combination of incomplete SOA gain recovery and memory of the startup sequence that is provided by the feedback. Clock division requires a sufficiently high differential phase shift per unit differential gain, which is related to the SOA linewidth enhancement factor.

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Wong WM, Blow KJ. Semiconductor optical amplifier-based nonlinear optical-loop mirror with feedback. In Chen RT, Chon JC, editors, WDM and Photonic Switching Devices for Network Applications III. SPIE. 2002. p. 119-133. (SPIE proceedings; 4653). https://doi.org/10.1117/12.469641