Short gain cavity distributed bragg reflector laser

Patent metadata

Field	Value
Publication number	US-9048618-B2
Application number	US-201313795384-A
Country	US
Kind code	B2
Filing date	Mar 12, 2013
Priority date	Mar 12, 2013
Publication date	Jun 2, 2015
Grant date	Jun 2, 2015

Abstract

A long wavelength, short cavity laser can include: an active region or gain cavity having a length from about 10 microns to about 150 microns; a gap region adjacent to the active region and having a gap length that is less than 30 microns or less than the length of the active region; and a distributed Bragg reflector (“DBR”) region having a grating with a kappa of at least about 200 cm −1 , wherein the gap region is between the active region and the DBR region, and wherein the laser lases at a long wavelength side of a Bragg peak of the laser. The laser can have a second DBR region opposite of the first DBR region.

First claim

The invention claimed is:

1. A single mode laser comprising:
a gain cavity having a length from about 10 microns to about 150 microns;
a distributed Bragg reflector (“DBR”) region having a grating with a corrugation depth kappa of at least about 200 cm −1 ;
a gap region between the gain cavity and DBR region having a gap length that is less than about 30 microns; and
a single lasing mode at a long wavelength side of a Bragg peak of the DBR region.

2. Th…

Assignees

• Finisar Corp

Inventors

• Matsui Yasuhiro

Classifications

• H01S5/1221

  Electricity · mapped topic

• H01S5/06256 Primary

  Electricity · mapped topic

• H01S5/0287

  Electricity · mapped topic

• H01S5/06251

  Electricity · mapped topic

• H01S5/1039

  Electricity · mapped topic