Digital Output Noise-Cancelling Fiber Optic Microphone

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 27947
Amount: $78,842.00
Phase: Phase I
Program: SBIR
Awards Year: 1995
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
8608 University Green #5 Po, Box 620377, Middleton, WI, 53562
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 James P. Stec
 (608) 831-0655
Business Contact
Phone: () -
Research Institution
The work proposed will develop a Noise-Canceling Fiber Optic Microphone (NCFOM) with a digital output signal for use with AF communication systems. A first-order vented cavity NCFOM design and a dual diaphragm NCFOM design will be analyzed using already developed equivalent frequency circuits to determine the parameter values necessary for maximum directivity. Venting of the acoustic cavity or a passive diaphragm in the acoustic cavity will be used to adjust the directivity and noise cancellation characteristics of the microphones. A commercially available integrated circuit that converts light intensity to frequency will be used to provide a digital output signal for use with communication systems. This work would produce a microphone that could be used in both electrical and acoustic noisy environments.

* Information listed above is at the time of submission. *

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