Accession Number : ADD016365

Title :   Method and Apparatus for Polarization-Maintaining Fiber Optical Amplification with Orthogonal Polarization Output.

Descriptive Note : Patent, Filed 15 Mar 93, patented 12 Apr 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Duling, Irl N , III ; Esman, Ronald D

Report Date : 12 Apr 1994

Pagination or Media Count : 15

Abstract : A single-polarization fiber optical amplifier and corresponding method is provided capable of amplifying an optical input signal by a fiber optic amplifier constructed of fiber which may be non-polarization-maintaining. The single-polarization fiber optical amplifier provides a direction-selective coupler which receives an optical input at a first port and outputs an optical output at a second port. A fiber optic amplifier is operatively connected to the direction-selective coupler at a bidirectional port for amplifying the optical input. A retro-reflecting orthogonal polarization converter is operatively connected to the fiber optic amplifier, reflecting the amplified optical input from the fiber optic amplifier in a return direction through the Fiber optic amplifier and in an orthogonal polarization to the amplified optical input. The direction-selective coupler outputs the reflected amplified orthogonal optical input at the second port as the optical output of the direction selective coupler. Further configurations adapting the input and output ports to transmit the optical signal through cavity or other structures may be provided to produce, for example, an ultrashort pulse optical source; a single-wavelength, single-polarization, widely-tunable laser source: or an amplified spontaneous emission source.

Descriptors :   *PATENTS, *OPTICAL COMMUNICATIONS, *FIBER OPTICS, AMPLIFIERS, CAVITIES, CONFIGURATIONS, CONVERTERS, COUPLERS, EMISSION, LASERS, OUTPUT, POLARIZATION, SIGNALS, TUNABLE LASERS

Subject Categories : Telemetry
      Non-radio Communications
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE