Optical waveguide modulator with output light monitor

Details Optical waveguide modulator with output light monitor Optical waveguide modulator with output light monitor

2007-04-03

2007-04-03

Healy, Brian (Department: 2883)

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

C385S002000, C385S048000, C385S049000, C385S050000, C359S245000

Reexamination Certificate

active

09980606

ABSTRACT:
An optical waveguide monitor equipped with an output light monitor having a decreased restriction in the dimensions and form thereof, a high reliability and a low production cost includes an optical waveguide element (having a plurality of surface waveguide portions, a connecting portion for converging and connecting the surface waveguide portions and an output light-outputting waveguide portion connected to the connecting portion each formed on a dielectric substrate plate; an output light optical fiber connected to an output end of the output light-outputting waveguide portion, a reinforcing capillary for reinforcing a connection between the optical waveguide element and the output light optical fiber and a monitoring light receiving means, wherein the reinforcing capillary has a hole or groove for containing and supporting the output light optical fiber therein, a connecting face thereof bonded to an output end face of the substrate, and a terminal surface opposite to the connecting face, to thereby enable at least one member of the reinforcing capillary per se and a monitoring light optical fiber located within the capillary to receive the monitoring light outputted from the optical waveguide element, to transmit it therethrough and to output it to the outside of the capillary, and the monitoring light receiving means is located in a position suitable to receive the monitoring light outputted to the outside of the reinforcing capillary and has a photoelectric conversion element.

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