Accession Number : ADP008110

Title :   Integrated, TE- and TM-Pass, Acoustically Tunable, Double-Stage Wavelength Filters with Combined Optical/Acoustical Waveguides,

Corporate Author : PADERBORN UNIV (GERMANY F R)

Personal Author(s) : Herrmann, H. ; Reich, P. M. ; Reimann, V. ; Ricken, R. ; Seibert, H.

Report Date : APR 1992

Pagination or Media Count : 2

Abstract : Integrated optical, acoustically tunable wavelength filters are attractive due to their narrow-band filter characteristics, large tuning range, low drive power and simultaneous filtering capability. Such wavelength filters can be realized by combining acousto-optical mode converters with polarizers. In the mode converter a surface acoustic wave (SAW) with an appropriately chosen frequency yields a polarization conversion of a guided optical wave of specific wavelength to allow passing the subsequent polarizer. To improve the efficiency of the mode converter, acoustical strip waveguides can be used. We have demonstrated such an integrated optical filter with a tuning range of more than 100 nm and a filter bandwidth of less than 3 nm.

Descriptors :   *ACOUSTOOPTICS, *SYMPOSIA, *OPTICAL WAVEGUIDES, BANDWIDTH, CONVERTERS, FILTRATION, FREQUENCY, NARROWBAND, OPTICAL FILTERS, POLARIZATION, POLARIZERS, SURFACE ACOUSTIC WAVES, WAVEGUIDES, SIDELOBES, GERMANY.

Subject Categories : Fiber Optics and Integrated Optics
      Acoustooptic and Optoacoustic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE