Electro-optic modulator with particular diffused buffer layer

Details Electro-optic modulator with particular diffused buffer layer Electro-optic modulator with particular diffused buffer layer

2006-10-17

2006-10-17

Font, Frank G. (Department: 2883)

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

Reexamination Certificate

active

07123784

ABSTRACT:
An electro-optic modulator (300) comprises a substrate (310) made of a material which has an electro-optic effect and a pyroelectric effect. In the substrate (310), an optical waveguide (320) is formed to have at least a pair of optical paths. On the substrate (310) and on the optical waveguide (320), a transparent buffer layer (330) is formed to cover the optical waveguide (320). On the buffer layer (330), first and second electrodes (341, 342) are formed so that the first and the second electrodes (341, 342) are arranged to cause refractive index changes in the pair of optical paths in response to electrical fields surrounding the electro-optic modulator (300). The buffer layer (330) is a mutual diffusion layer. The mutual diffusion layer is made from laminated films comprised of at least one transparent insulator film and at least one transparent conductor film but has no clear boundary between the transparent insulator film and the transparent conductor film.

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