Optical waveguide module

Details Optical waveguide module Optical waveguide module

2006-04-04

2006-04-04

Pak, Sung (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S014000, C385S048000, C385S129000

Reexamination Certificate

active

07024079

ABSTRACT:
In a planar-waveguide-type optical circuit1, a reflection filter4is placed inside an oblique groove3formed to traverse optical waveguides2n. Reflected light from the reflection filter4is detected by photodetectors61nof a photodetector array6, and thereby light intensity of signal light is monitored. A glass substrate made of glass material having a refractive index substantially identical to that of a core20of the optical waveguide2nand filter fixing resin5fixing the reflection filter4is used for a substrate10of the optical circuit1constituting part of the groove3. This inhibits reflection of light in various regions of the groove3, thereby reducing generation of extra scattered light inside the groove3and its confinement. An optical waveguide module capable of enhancing monitoring characteristics of the signal light is thus realized.

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T. Sasaki et al., Multi-Channel Power Level Monitor with Upward-Reflector and Sensor-Array Integrated in Planar Lightwave Circuit, Technical Digest of Optical Fiber Communication Conference, 2001 (OFC 2001), Mar. 17-22, 2001, vol. 3, p. WB6-1-WB6-3.

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