Optical heterodyne receiver for fiber optic communications syste

Details Optical heterodyne receiver for fiber optic communications syste Optical heterodyne receiver for fiber optic communications syste

1993-04-20

1995-09-19

Moore, David K.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359163, 385 14, 257 82, H04B 1006

Patent

active

054521181

ABSTRACT:
A monolithic integrated optical heterodyne receiver circuit formed on a single chip and a process of its manufacture are disclosed. The heterodyne receiver circuit essentially includes a tunable local oscillator formed on a substrate for generating a first light beam, a first waveguide coplanarly formed on the substrate adjacent to the local oscillator for transmitting the first light beam, a second waveguide formed on top of the first waveguide for receiving and transmitting an information-encoded second light beam, a coupler region sandwiched between the first and second waveguides for mixing the two light beams, and a pair of detectors mounted in electrical series with one another for converting the mixed light beams to a radio frequency signal operating at an intermediate frequency.

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