Theory And Experiment On Distributed Feedback Lasers With Chirped Grating

Akira Suzuki; Kunio Tada

doi:10.1117/12.959182

25 February 1981 Theory And Experiment On Distributed Feedback Lasers With Chirped Grating

Akira Suzuki, Kunio Tada

Proceedings Volume 0239, Guided Wave Optical and Surface Acoustic Wave Devices: Systems and Applications; (1981) https://doi.org/10.1117/12.959182
Event: 24th Annual Technical Symposium, 1980, San Diego, United States

Abstract

It is shown that small and gradual variations in the effective refractive-index or the grating period as little as 10-4 along the laser axis can have significant effects on the lasing characteristics of DFB (distributed feedback) lasers. Through numerical analyses based on the coupled-mode equations, it has been predicted that, in comparison with a DFB laser with uniform axial distribution of the effective refractive-index or the grating period, the axial-mode selectivity and the threshold gain of the lowest mode are much improved in a DFB laser with symmetric cosineor quadratic distribution and are much deteriorated in that with asymmetric linear distribution. Optically pumped GaAs DFB lasers with variable grating period have been fabricated by a new holographic interference technique, and experimental results consistent with the theoretical predictions are obtained.

Citation Download Citation

Akira Suzuki and Kunio Tada "Theory And Experiment On Distributed Feedback Lasers With Chirped Grating", Proc. SPIE 0239, Guided Wave Optical and Surface Acoustic Wave Devices: Systems and Applications, (25 February 1981); https://doi.org/10.1117/12.959182

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