1988-09-16
1991-07-16
Gonzalez, Frank
G02B 626
Patent
active
050319892
ABSTRACT:
An optical filter-coupler comprises at least two optical waveguides such as optical fibers closely spaced apart to each other for allowing light propagating in one waveguide to couple into the other. Materials for the waveguides are selected to have different wavelength-dispersive refractive indexes so that the waveguides have a common refractive index at a selected wavelength, whereby a complete power transfer is obtained at such selected wavelength.
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Katsumi Morishita; "Wavelength Selective Optical-Fibers Directional Couplers Using Dispersive Materials"; Optics Letters, vol. 13, pp. 158-160; Feb. 1988.
Frequenz, vol. 37, No. 9, Sep. 1983, pp. 226-231, Berlin, Germany, article by T. Schwander et al., "Computer-Aided Manufacturing of Graded-Index Fibre Couplers for Bidirectional Communication Links".
Morishita Katsumi
Takesue Toshiharu
Adams Bruce L.
Gonzalez Frank
Ngo John
Osaka Electric and Communication University
Seiko Instruments Inc.
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