Patent
1979-06-01
1982-05-04
Punter, William H.
350392, G02F 103, G02F 123
Patent
active
043279716
ABSTRACT:
In a light wavelength separating modulator there is provided a crystal manifesting an electro-optical effect which rotates the principal axes of the refractive index ellipsoid of the crystal, a plurality of juxtaposed electrodes formed on the crystal in the direction of transmission of light and having different periods, and means for applying modulation signals to respective electrodes. When light generated by a light source, having a light spectrum where half value bandwidth exceeds 100A, is transmitted through the modulator, a light wavelength multiplex signal transmitting apparatus is obtained; whereas when a birefringence body is located on the output side of the modulator, a light wavelength separating switch is obtained.
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Kondo et al. "Phase-Matched Electro-Optic Light Modulator", Proc. 9th Conf. on Solid State Devices Tokyo 8-1977. Published Japanese Jr. of Applied Physics vol. 17 (1978) Supp 17-1 pp. 107-112.
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Kondo Michikazu
Ohta Yoshinori
Sakaguchi Mitsuhito
Hamrick Claude A. S.
Nippon Electric Co. Ltd.
Punter William H.
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