Tapered DBR for improving characteristics of DFB and DBR lasers

Mohammad H. Rahnavard; Aref Bakhtazad; Habibollah Abiri

doi:10.1117/12.50793

1 December 1991 Tapered DBR for improving characteristics of DFB and DBR lasers

Mohammad H. Rahnavard, Aref Bakhtazad, Habibollah Abiri

Proceedings Volume 1562, Devices for Optical Processing; (1991) https://doi.org/10.1117/12.50793
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

In DFB and OBR lasers, phase of corrucation at the reflective end and possible change of reflectivity at the facets, may alter the conditions of oscillation. These result the variation on the output power amplitude and the wavelength. The purpose of tapering at the grating is to reduce these effects. In addition, with dissimilar tapering, we can increase mode selectivity of such lasers. In this paper, we consider reflection coefficient of tapered DBR as a function of end facet reflection coefficient, and deviation from the Bragg's condition. It is shown that tapering improves the operation of DFB and DBR lasers.

Citation Download Citation

Mohammad H. Rahnavard, Aref Bakhtazad, and Habibollah Abiri "Tapered DBR for improving characteristics of DFB and DBR lasers", Proc. SPIE 1562, Devices for Optical Processing, (1 December 1991); https://doi.org/10.1117/12.50793

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