Method and apparatus for locking the transmission wavelength in optical communication laser packages
AssigneeTriQuint Technology Holding Co.
InventorsKaushal Kumar Verma, Stephen James Salko
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Abstract
The present invention is directed toward a monitoring and control system for an optical system. In one aspect of the present invention the system may include an interferometer that splits an input beam into a transmitted portion and a reflected portion. The interferometer introduces a path length difference between at least a segment of the transmitted and reflected portions that recombine to form an output beam having an intensity that varies as a function of wavelength of the input beam.
Claims17
A monitoring and control apparatus for an optical system, comprising:
- an interferometer comprised of a first prism having a first thickness coupled to a second prism having a second thickness, wherein the interferometer splits an input beam into a transmitted portion and a reflected portion
- and wherein a difference in the first thickness of the first prism and the second thickness of the second prism introduces a path length difference between the transmitted and reflected portions,
- and wherein the transmitted and reflected portions recombine to form an output beam having an intensity that varies as a function of wavelength of the input beam.
A monitoring and control apparatus for an optical system, comprising:
- an interferometer comprising a first right angle prism having a first thickness optically coupled along an interface to a second right angle prism having a second thickness,
- wherein an input beam is incident upon said interface and split into a transmitted portion and a reflected portion, and
- wherein differences in said first and second thicknesses introduce a path length difference between at least a portion of the transmitted and reflected portions that recombine to form an output beam having an intensity that varies as a function of wavelength of the input beam.
A monitoring and control apparatus for an optical system, comprising:
- an interferometer comprising a body and first and second diffraction gratings coupled to parallel opposing sides of said body, wherein said interferometer introduces a pathlength difference for at least a portion of positive and negative diffraction rays that recombine to form an output beam having an intensity that varies as a function of wavelength of the input beam.
A method for monitoring and controlling an optoelectronic device, comprising:
- splitting an incoming light into transmitted rays and reflected rays at a partially reflective interface between two prisms;
- introducing a path length difference between at least a portion of the transmitted and reflected rays;
- and
- combining the transmitted and reflected rays having the path length difference to form an output beam having an intensity that varies as a function of wavelength of the input beam.
A method for monitoring and controlling an optoelectronic device, comprising:
- splitting an incoming light into positive and negative diffractions orders;
- introducing a path length difference between at least a portion of the positive and negative diffractions orders;
- and
- combining the positive and negative diffractions orders having the path length difference to form an output beam having an intensity that varies as a function of wavelength of the input beam.
Dependencies are inferred from the claim text.