Mode-hop tolerant semiconductor laser design
First Claim
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.
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Accused Products
Abstract
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.
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Citations
21 Claims
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1. A laser comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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determining a temperature change during operation of a lasing device, wherein the lasing device comprises; a gain section; a phase control section; a wavelength filter; a first reflector; and a second reflector to form a lasing cavity with the first reflector, the lasing 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 lasing 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; and tuning the phase of an output signal of the lasing cavity in response to the temperature change. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A system comprising:
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a receiver module; and a transmitter module to generate an output signal to be received by the receiving module, the transmitter module to include a laser device to generated the output signal and comprising; a gain section; a phase control 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. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification