Optical waveguides – With optical coupler – Particular coupling structure
Patent
1992-04-30
1993-02-09
Ullah, Akm E.
Optical waveguides
With optical coupler
Particular coupling structure
385 11, G02B 610, G02F 1025
Patent
active
051858312
ABSTRACT:
A TE polarization absorption film is provided on an optical waveguide between an ouput end of the optical waveguide and a directional coupler composed of the optical waveguide and another optical waveguide. In accordance with the presence of the TE polarization absorption film, a difference of output light power between polarization components becomes minimized.
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Y. Tanisawa et al., "Low Drive Voltage and Low Loss . . . Waveguide Switches", 1st Microoptics Conference 1987, pp. 106-109.
NEC Corporation
Ullah Akm E.
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