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1. (WO2017155901) DISTRIBUTED REFLECTOR LASER

Pub. No.:    WO/2017/155901    International Application No.:    PCT/US2017/021014
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Tue Mar 07 00:59:59 CET 2017
IPC: H01S 5/0625
Applicants: FINISAR CORPORATION
Inventors: MATSUI, Yasuhiro
Title: DISTRIBUTED REFLECTOR LASER
Abstract:
A distributed reflector (DR) laser may include a distributed feedback (DFB) region (102) and a distributed Bragg reflector (DBR) (104). The DFB region may have a length in a range from 30 micrometers (µm) to 100 μm and may include a DFB grating with a first kappa in a range from 100 cm-1 to 150 cm-1. The DBR region may be coupled end to end with the DFB region and may have a length in a range from 30-300 µm. The DBR region may include a DBR grating with a second kappa in a range from 150 cm-1 to 200 cm-1. The DR laser may additionally include a lasing mode and a p-p resonance frequency. The lasing mode may be at a long wavelength side of a peak of a DBR reflection profile of the DBR region. The p-p resonance frequency may be less than or equal to 70 GHz.