Mode-hop tolerant semiconductor laser design

摘要

Described herein are methods, systems, and apparatuses to utilize a laser device comprising a gain section, a wavelength filter, a first reflector, and a second reflector to form a laser cavity with the first reflector, the laser cavity to include the gain section and the wavelength filter. The wavelength filter is temperature stabilized to a predetermined temperature range and the remaining portions of the laser cavity are not temperature stabilized. The wavelength filter, when at the predetermined temperature range, comprises a plurality of adjacent longitudinal modes such that a difference in modal gain values associated with each of the adjacent longitudinal modes is within a predetermined delta. Thus, the cavity of the laser device is designed to experience some mode hops when the device temperature changes; however, because the wavelength filter is stabilized in temperature, the cavity drift due to these mode hops is within a limited range.

主权项

1. A laser comprising:
a gain section; a wavelength filter; a first reflector; and a second reflector to form a laser cavity with the first reflector, the laser cavity to include the gain section and the wavelength filter; wherein the wavelength filter is temperature stabilized within a predetermined temperature range and the remaining portions of the laser cavity are not temperature stabilized, and wherein the wavelength filter, when at the predetermined temperature range, comprises a plurality of adjacent longitudinal modes such that cavity round-trip modal gain values associated with each of the adjacent longitudinal modes comprise similar values differing by a predetermined delta.