Accession Number : ADA290585

Title :   High Gain, Low Noise and Broadband Raman and Brillouin Fiber-Optic Amplifiers, Channel Selectors and Switches.

Descriptive Note : Interim technical rept. 15 Jul 93-14 Jul 94,

Corporate Author : NORTH CAROLINA AGRICULTURAL AND TECHNICAL STATE UNIV GREENSBORO

Personal Author(s) : Yu, Chung

PDF Url : ADA290585

Report Date : 12 SEP 1994

Pagination or Media Count : 29

Abstract : Stimulated Brillouin and Raman scattering has been studied at 10.6 micrometers wavelength in fibers without much success due to the lack of low-loss, single-mode fibers and lasers with sufficiently narrow linewidth. The Brillouin based technology has advanced significantly with the advent of low-loss, single-mode fibers at 1.55 and 1.310 micrometers wavelengths. Conclusive experimental evidence points to the narrowband nature of Brillouin amplifiers, and redirects interest in their application to sensor and switching applications. Both stimulated Brillouin backscattering and guided acoustic wave forward scattering have been observed in fibers and are being explored for practical application as sensors to be bonded to or embedded in structures to monitor structural integrity. The stimulated Brillouin fiber ring laser is also being studied for its optical switching capabilities. The capability of this unique sensing mechanism is demonstrated in this report. (MM)

Descriptors :   *FIBER OPTICS, *OPTICAL SWITCHING, *OPTICAL DETECTORS, *ACOUSTOOPTICS, LIGHT SCATTERING, SCATTERING, ACOUSTIC WAVES, BACKSCATTERING, LASERS, BIREFRINGENCE, BRILLOUIN ZONES, RAMAN SPECTRA, AMPLIFIERS, LOW NOISE, HIGH GAIN, CHANNEL SELECTORS.

Subject Categories : Electrooptical and Optoelectronic Devices
      Acoustooptic and Optoacoustic Devices
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE