G - Physics – 02 – F
Patent
G - Physics
02
F
G02F 1/00 (2006.01) G02B 5/28 (2006.01) G02B 6/34 (2006.01) G02B 6/42 (2006.01) G02B 7/00 (2006.01) G02B 26/00 (2006.01) G02F 1/01 (2006.01) G02F 1/29 (2006.01) H04J 14/02 (2006.01) G02B 6/12 (2006.01) G02F 1/21 (2006.01) H01S 5/068 (2006.01) H01S 5/125 (2006.01)
Patent
CA 2336492
The thermo-optic behavior of an optical path over a range of temperatures .DELTA.T is controlled by determining a figure-of merit (FOM) for the optical path and including in the path a body of crystalline material that enables the conditions specified by the FOM to be satisfied. The crystalline material is highly transparent at a wavelength .lambda. of radiation propagating in the path, and it has a coefficient of thermal expansion (CTE) and a refractive index n such that the CTE and dn/dT are mutually adapted to satisfy the FOM over the range .DELTA.T. In one embodiment, the CTE and dn/dT of an etalon compensate one another so as to perform frequency discrimination that is essentially temperature insensitive over the range .DELTA.T. In a preferred embodiment of the optical etalon the crystalline material comprises LiCaAlF6.
Ackerman David Alan
Bylsma Richard Bendicks
Hartman Robert Louis
Koch Thomas Lawson
Kowach Glen Robert
Kirby Eades Gale Baker
Lucent Technologies Inc.
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