Light source cable of lasing that is wavelength locked by an injected light signal
First Claim
1. An apparatus, comprising:
- a light source capable of lasing having antireflective coating on one or more facets of the light source capable of lasing, wherein the light source capable of lasing to receive a spectral slide of a light signal from a broadband light source to wavelength lock an output wavelength of the light source capable of lasing within the bandwidth of the injected light signal; and
a current pump to bias the light source capable of lasing such that the injected light signal into the light source capable of lasing suppresses lasing modes outside of the bandwidth of the injected light signal.
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Accused Products
Abstract
Various methods, systems, and apparatuses are described in which a light source (101) capable of lasing is wavelength locked by an injected light signal. The light source (101) capable of lasing, such as a Fabry-Perot laser diode, may have antireflective coating on one or more facets of the light source (101) capable of lasing. The light source (101) capable of lasing receives a spectral slice of a light signal from a broadband light source (113) to wavelength lock the output wavelength of the light source (101) capable of lasing within the bandwidth of the injected light signal. A current pump (141) may bias the light source (101) capable of lasing to operate as a reflective regenerate semiconductor optical amplifier so that the injected light is reflected back out a front facet after being amplified and wavelength locked. The current pump (141) may also bias the light source (101) capable of lasing such that the externally injected narrow-band light signal into the light source (101) capable of lasing suppresses the lasing modes outside of the bandwidth of injected incoherent light.
118 Citations
48 Claims
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1. An apparatus, comprising:
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a light source capable of lasing having antireflective coating on one or more facets of the light source capable of lasing, wherein the light source capable of lasing to receive a spectral slide of a light signal from a broadband light source to wavelength lock an output wavelength of the light source capable of lasing within the bandwidth of the injected light signal; and
a current pump to bias the light source capable of lasing such that the injected light signal into the light source capable of lasing suppresses lasing modes outside of the bandwidth of the injected light signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An apparatus, comprising:
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a light source capable of lasing having one or more facets and a laser chip with two or more cavity modes, wherein a first facet of the light source capable of lasing to receive a spectral slice of a light signal from a broadband light source to wavelength lock the output wavelength of the light source capable of lasing within the bandwidth of the injected light signal and the injected light signal is reflected back out the first facet after being amplified and wavelength locked; and
a current pump to bias the light source capable of lasing to operate as a reflective regenerative semiconductor optical amplifier, wherein the bandwidth of the injected light signal and a size of the laser chip cooperate to approximately cause wavelengths in the bandwidth of the injected light signal to overlap with one or more cavity modes of the light source capable of lasing independent of an external device effecting the light source capable of lasing shifting the mode of the light source capable of lasing. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A multi-channel passive optical network wavelength division multiplexing system, comprising:
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a broadband light source that generates a broadband light signal;
a demultiplexer that slices spectrally the broadband light signal to produce a plurality of narrow-band light signals;
a first light source capable of lasing to couple at a first output end of the demultiplexer, wherein the first light source capable of lasing has a first laser chip with a first center wavelength and is wavelength locked by a first injected spectrally-sliced narrow-band light signal; and
a second light source capable of lasing to couple at a second output end of the demultiplexer, wherein, the second light source capable of lasing has a second laser chip with a second center wavelength and is wavelength locked by a second injected spectrally-sliced narrow-band light signal. - View Dependent Claims (45, 46, 47, 48)
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Specification