Optical Amplifier for Cryogenic Detector Signals

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 22613
Amount: $68,722.00
Phase: Phase I
Program: SBIR
Awards Year: 1994
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Optra, Inc.
461 Boston Street, Topsfield, MA, 01983
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Geert Wyntjes
 (508) 887-6600
Business Contact
Phone: () -
Research Institution
OPTRA proposes to demonstrate a novel approach to the detection, amplification and transmission of low level detector signals from cryogenic detectors. Essential elements of the proposed work are 1) A cooled optical waveguide phase modulator that imposes a phase modulation proportional to a detector signal on an optical beam from a low power, CD type laser diode. 2) A low heat loss fiber optic link to take the modulated signal outside the detector dewar and 3) A very high resolution, homodyne phase processor, that recovers the phase information at the detector noise level and with high fidelity. This combination, the power from the laser diode and the phase modulation from the modulator provides for significant power gain in terms of electric power at the input terminals in and the power in the interferometer fringe signals out. Advantages of the approach are in principle no restrictions on the operating temperature of the modulator, very low heat loss through the fiber optic link and a high degree of immunity from electro magnetic interference.

* information listed above is at the time of submission.

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