Design Of Distributed Feedback(DFB) Laser-Based External Cavity Structures For Coherent Communications

Harish R. D. Sunak; Clark P. Engert

doi:10.1117/12.959762

23 February 1989 Design Of Distributed Feedback(DFB) Laser-Based External Cavity Structures For Coherent Communications

Harish R. D. Sunak, Clark P. Engert

Proceedings Volume 0988, Components for Fiber Optic Applications III and Coherent Lightwave Communications; (1989) https://doi.org/10.1117/12.959762
Event: O-E/Fiber LASE '88, 1988, Boston, MA, United States

Abstract

Critical parameter combinations, which govern the reduction of the linewidth and tunability in a DFB laser-based external cavity structure, are determined by a mathematical model. The coupling coefficient, operating point of the DFB laser, refractive index and the external cavity length are found to greatly determine the absolute linewidth of this structure. An optimum continuous tuning range of 55 GHz is predicted. However, the usable tuning range is much smaller as will be seen.

Citation Download Citation

Harish R. D. Sunak and Clark P. Engert "Design Of Distributed Feedback(DFB) Laser-Based External Cavity Structures For Coherent Communications", Proc. SPIE 0988, Components for Fiber Optic Applications III and Coherent Lightwave Communications, (23 February 1989); https://doi.org/10.1117/12.959762

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