Integrated bias for waveguide amplitude modulator

Details Integrated bias for waveguide amplitude modulator Integrated bias for waveguide amplitude modulator

1980-01-28

1981-05-12

Levy, Stewart J.

G02B 514, G02F 100

Patent

active

042668506

ABSTRACT:
An interferometric waveguide amplitude modulator for conducting optical egy, and having an integral means for producing a linear response to a small applied voltage (approximately less than 100 volts), includes a first waveguide arm which has an increased physical length relative to a second waveguide arm, the increase .DELTA. being defined by .DELTA.=.pi./(2Kn), where K=2.pi./.lambda. and K is the free-space wavevector, .lambda. is the free-space wavelength of the optical energy and n is the index of refraction of the waveguide material. The increase, .DELTA., provides an integral bias of .pi./2 radians to the modulator for producing a linear response to a small applied voltage.

REFERENCES:
patent: 3920314 (1975-11-01), Yajima
patent: 4070094 (1978-01-01), Martin
patent: 4111521 (1978-09-01), Streifer et al.
patent: 4142775 (1979-03-01), Ramaswamy et al.

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