External Feedback Sensitivity of Partly Gain-Coupled DFB Semiconductor Lasers

R. Hui; M. Kavehrad

doi:10.1109/68.313045

External Feedback Sensitivity of Partly Gain-Coupled DFB Semiconductor Lasers

R. Hui, M. Kavehrad

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

External optical feedback sensitivity of partly gain-coupled DFB semiconductor lasers has been analyzed in above threshold operation regime. Both the longitudinal spatial hole burning and the nonlinear gain compression have been taken into account. A comparison has been made among λ/4-shifted, pure index-coupled and partly gain-coupled DFB laser diodes. Even though pure index-coupled and partly gain coupled DFB lasers exhibit similar sensitivity to external optical feedback at the threshold, however, gain grating can reduce the feedback sensitivity when the lasers operate well above the threshold specially when the k L parameter is high.

Original language	English (US)
Pages (from-to)	897-899
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	6
Issue number	8
DOIs	https://doi.org/10.1109/68.313045
State	Published - Aug 1994

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/68.313045

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title = "External Feedback Sensitivity of Partly Gain-Coupled DFB Semiconductor Lasers",

abstract = "External optical feedback sensitivity of partly gain-coupled DFB semiconductor lasers has been analyzed in above threshold operation regime. Both the longitudinal spatial hole burning and the nonlinear gain compression have been taken into account. A comparison has been made among λ/4-shifted, pure index-coupled and partly gain-coupled DFB laser diodes. Even though pure index-coupled and partly gain coupled DFB lasers exhibit similar sensitivity to external optical feedback at the threshold, however, gain grating can reduce the feedback sensitivity when the lasers operate well above the threshold specially when the k L parameter is high.",

author = "R. Hui and M. Kavehrad",

note = "Funding Information: Manuscript received April 20, 1994; revised May 27, 1994. This work was supported by the Telecommunication Research Institute of Ontario, Photonics Networks and Systems Thrust. R. Hui and M. Kavehrad are wi th the Electrical Engineering Department, University of Ottawa, Ottawa, ON, K1N 6NS Canada. T. Makino is with the Advanced Technology Lab., Bell-Northern Research, Ottawa, ON, KlY 4H7 Canada. IEEE Log Number 9403619.",

year = "1994",

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doi = "10.1109/68.313045",

language = "English (US)",

volume = "6",

pages = "897--899",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

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N1 - Funding Information: Manuscript received April 20, 1994; revised May 27, 1994. This work was supported by the Telecommunication Research Institute of Ontario, Photonics Networks and Systems Thrust. R. Hui and M. Kavehrad are wi th the Electrical Engineering Department, University of Ottawa, Ottawa, ON, K1N 6NS Canada. T. Makino is with the Advanced Technology Lab., Bell-Northern Research, Ottawa, ON, KlY 4H7 Canada. IEEE Log Number 9403619.

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N2 - External optical feedback sensitivity of partly gain-coupled DFB semiconductor lasers has been analyzed in above threshold operation regime. Both the longitudinal spatial hole burning and the nonlinear gain compression have been taken into account. A comparison has been made among λ/4-shifted, pure index-coupled and partly gain-coupled DFB laser diodes. Even though pure index-coupled and partly gain coupled DFB lasers exhibit similar sensitivity to external optical feedback at the threshold, however, gain grating can reduce the feedback sensitivity when the lasers operate well above the threshold specially when the k L parameter is high.

AB - External optical feedback sensitivity of partly gain-coupled DFB semiconductor lasers has been analyzed in above threshold operation regime. Both the longitudinal spatial hole burning and the nonlinear gain compression have been taken into account. A comparison has been made among λ/4-shifted, pure index-coupled and partly gain-coupled DFB laser diodes. Even though pure index-coupled and partly gain coupled DFB lasers exhibit similar sensitivity to external optical feedback at the threshold, however, gain grating can reduce the feedback sensitivity when the lasers operate well above the threshold specially when the k L parameter is high.

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External Feedback Sensitivity of Partly Gain-Coupled DFB Semiconductor Lasers

Abstract

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