Channel waveguide modulator

Details Channel waveguide modulator Channel waveguide modulator

1987-04-27

1988-12-13

Tarcza, Thomas H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

350 9614, G02B 514

Patent

active

047913886

ABSTRACT:
An optical modulator comprises a crystal whose top surface includes a channel waveguide whose axis makes an angle with the crystal optic axis larger than the critical angle for TE-polarized leaky mode propagation. An electrode structure overlies the top surface of the crystal for inducing mode conversion of TM-polarized waves propagating in the waveguide to lossy radiation modes.

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patent: 4262993 (1981-04-01), Bunns et al.
patent: 4433895 (1984-02-01), Puech et al.
Sheem and Tsai, "Light Beam Switching and Modulation using a Built-in Dielectric Channel in LiNbO.sub.3 Planer Waveguide", Applied Physics, vol. 17, No. 6, 1978.
"Optical Switching Device Using Leaky Surface Wave" Yamanouchi et al., IEEE Journal of Quantum Electronics, vol. QE-14, No. 11 (1978).
"Leaky-Mode Propagation In Ti-Diffused LiMbO.sub.3 and LitaO.sub.3 Waveguides", S. K. Sheem et al., Optics Letters, vol. 3, No. 3, Sep. (1978).
"Methods of Characterizing Photorefractive Susceptibility of LiMFO.sub.3 Waveguides", R. A. Becker, SPIE, vol. 578, Integrated Optical Circuit Engineering 11 (1985).

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