Optical waveguides – Temporal optical modulation within an optical waveguide
Patent
1997-01-21
1999-04-06
Healy, Brian
Optical waveguides
Temporal optical modulation within an optical waveguide
385 2, 385 5, 385 8, 385 9, 385 14, 385 27, 385 28, 385 30, 385 49, 385 40, 385132, G02F 101, G02B 626
Patent
active
058928570
ABSTRACT:
An electro-optic modulator is disclosed in the form of a compound waveguide device having a channel waveguide in optical proximity to an elongate waveguide propagating an optical signal therein. The channel waveguide includes a coupling surface through which optical energy is evanescently coupled to or from the optical signal propagating in the elongate waveguide. The channel waveguide is shaped to confine distribution of the optical energy therein along axes transverse to the axis of propagation of the optical energy. Transverse diffraction of the optical energy within the channel waveguide is thereby limited. The channel waveguide is formed from an electro-optically active material, and modulation of the optical signal propagating in the elongate waveguide is effected using the evanescent coupling effect between the two waveguides. In one embodiment, the elongate waveguide is a side-polished fiber-optic waveguide.
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Healy Brian
Molecular OptoElectronics Corporation
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