Optical device with a temperature insensitive optical...

Details Optical device with a temperature insensitive optical... Optical device with a temperature insensitive optical...

2006-03-21

2006-03-21

Ben, Loha (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S260000, C359S244000, C398S079000, C398S201000, C372S032000

Reexamination Certificate

active

07016097

ABSTRACT:
The thermo-optic behavior of an optical path over a range of temperatures is controlled by determining a figure of merit (FoM) for the optical path and including in the path a body of NaBi(Mo1-xWxO4)2crystalline material that enables the conditions specified by the FOM to be satisfied. The NaBi(Mo1-xWxO4)2crystalline material is highly transparent at a wavelength of radiation propagating in the path, and has a coefficient of thermal expansion (CTE) and a refractive index n such that the CTE and dn/dT of the etalon compensate one another so as to perform frequency discrimination that is essentially temperature insensitive over the range ΔT. The NaBi(Mo1-xWxO4)2crystalline material exhibits temperature independent transmission characteristics at about room temperature and at a wavelength of about 1550 nm.

REFERENCES:
patent: 3381225 (1968-04-01), Alfeev
patent: 4749254 (1988-06-01), Seaver
patent: 5245689 (1993-09-01), Gualtieri
patent: 6486999 (2002-11-01), Ackerman et al.

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