Accession Number : ADD018391

Title :   Fiber Optic Self-Multiplexing Amplified Ring Transducer and Force Transfer Sensor with Pressure Compensation.

Descriptive Note : Patent, Filed 2 May 95, patented 31 Dec 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Brininstool, Michael R

Report Date : 31 Dec 1996

Pagination or Media Count : 17

Abstract : A fiber optic sensor system includes a first optical power source which injects a light pulse into an optical fiber loop system. The light pulse circulates in the optical fiber loop system at a circulation frequency. The optical fiber loop system includes a transducer which modulates the circulation frequency in response to detecting a changing physical condition, a filter, polarization controller, an isolator, and an optical fiber gain medium for amplifying the light pulse. A second optical power source provides optical energy to the optical fiber gain medium. A detector system transforms a portion of the light pulse received from the optical fiber loop system into an output signal representing the circulation frequency.

Descriptors :   *FIBER OPTICS, *LIGHT PULSES, *PATENTS, SIGNAL PROCESSING, POLARIZATION, PRESSURE TRANSDUCERS, OPTICAL COMMUNICATIONS, PULSE GENERATORS, POWER SUPPLIES, MULTISENSORS, BANDPASS FILTERS, OPTICAL FILTERS, FREQUENCY MODULATORS, PULSE FREQUENCY MODULATION, POWER GAIN

Subject Categories : Electrical and Electronic Equipment
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE