Thermal compensators for waveguide DBR laser sources

Details Thermal compensators for waveguide DBR laser sources Thermal compensators for waveguide DBR laser sources

1997-03-21

1999-02-09

Davie, James W.

Coherent light generators

Particular beam control device

Optical output stabilization

372 20, 372 92, 372 96, 372102, H01S 310

Patent

active

058704175

ABSTRACT:
A waveguide DBR laser or waveguide DBR laser array may be comprised of a semiconductor gain element, or a series of semiconductor gain elements, in combination with a waveguide grating functioning as a resonant cavity end reflector for lasing operation comprising either an optical fiber having a fiber grating (fiber DBR laser) or a planar waveguide (planar waveguide DBR laser). The gain element may be comprised of a laser diode which has high efficient AR coating on its front facet so that it functions as a modulated gain element in a resonant cavity established between its rear HR facet and the grating formed in the external waveguide. Disclosed are ways to form this resonant cavity so that gain element modulation rates can be carried out in excess of 2 Gb/sec with suppression of longitudinal mode hops and/or with trimming to compensate for wavelength changes, rendering the waveguide DBR laser or waveguide DBR laser array highly suitable for WDM transmitter, dense WDM transmission systems and other communications applications.

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