Optical waveguides – Directional optical modulation within an optical waveguide
Patent
1992-02-05
1993-11-02
Gonzalez, Frank
Optical waveguides
Directional optical modulation within an optical waveguide
385 13, 385 25, 385 28, 385 29, 385 32, 25022716, G02B 626
Patent
active
052590453
ABSTRACT:
An optical modulation method operable in an optical transmission path using an optical fiber, wherein an optical fiber bending region is formed by bending a portion of the optical fiber into a U shape having a predetermined bending width. A bending width set point is set in correspondence with a predetermined inclined portion of a characteristic curve representing a dependency ratio of insertion loss of light propagating in said optical fiber bending region relative to the bending width thereof, said predetermined inclined portion of said characteristic curve being located between a predetermined maximum and minimum portion thereof. Intensity modulation of light propagating in the optical fiber is performed using a signal to be transmitted by adjusting the bending width of the optical fiber bending region in correspondence with the signal to be transmitted with reference to the bending width set point as a center.
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Azuma Yuji
Fukuda Akira
Ikawa Nobuhiro
Kuwahara Akio
Kuwaki Nobuo
Gonzalez Frank
Nippon Telegraph and Telephone Corporation
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