Back facet wavelength locker tuning and assembly method
AssigneeIntel Corporation
InventorsSylvain M. Colin, Raghuram Narayan, Owen B. Pine
Life of this patent
Estimating the term…
Abstract
Wavelength lockers, which monitor the wavelength drift of a laser's beam due to aging, are tunable to adjust for manufacturing misalignments between its various optical components. Tuning is accomplished by adjusting the position of a collimating lens using a flexure. Adjusting the lens position changes the angle of incidence of a monitored beam relative to a fixed filter and detector and avoids the challenging manufacturing task of rotating the filter and detector to achieve the same result.
Claims25
A wavelength locker, comprising:
- a first detector to detect a monitored beam;
- a second detector to detect the monitored beam offset from said first detector;
- a lens;
- and
- a lens mount to translate said lens in at least one of x and y-directions relative to an optical axis of the monitored beam to change an angle of incidence between the monitored beam and said first detector.
A wavelength locker device, comprising:
- a lens to collimate a beam;
- a splitter to split the collimated beam into a first beam and a second beam;
- a filter to filter said first beam;
- a first detector to receive said filtered first beam;
- a second detector to receive said second beam;
- and
- an adjustable lens mount to adjust a position of said lens to change an angle of incidence between said first beam and said first detector.
A method for tuning a wavelength locker, comprising:
- mounting a plurality of optical components on a surface;
- adjusting a position of a lens relative to said surface to change an angle of incidence between a beam and at least one of said plurality of optical components.
A method for tuning an optical device, comprising:
- collimating a beam with a lens;
- splitting the collimated beam into a first beam and a second beam;
- filtering said first beam;
- receiving said filtered first beam with a first detector;
- receiving said second beam with a second detector,
- adjusting at least one of a vertical and horizontal position of said lens to change the angle of incidence between the first beam and the first detector.
A wavelength locker comprising:
- a first detector fixed to a surface aligned with a first axis;
- a splitter to split a beam between said first axis and a substantially perpendicular axis;
- a filter in line with a second detector fixed to said surface aligned substantially with said perpendicular axis;
- and
- a lens adjustable along said first axis to adjust an angle of incidence between the beam and said filter and said second detector.
A wavelength locker, comprising:
- a first detector positioned to receive a first portion of a monitored beam;
- a second detector positioned to receive a second portion of the monitored beam;
- a lens;
- and
- a lens mount to translate said lens in at least one of x and y-directions to change an angle of incidence between the first portion of the monitored beam and said first detector.
22 The wavelength locker as recited in claim 21 wherein said lens mount is a flexure.
The wavelength locker as recited in claim 22 wherein said flexure comprises at least one pair of legs connected by a bridge.
Dependencies are inferred from the claim text.