Optical waveguides – With optical coupler – Particular coupling function
Reexamination Certificate
2006-12-05
2006-12-05
Lee, John D. (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling function
C385S027000, C385S028000
Reexamination Certificate
active
07146073
ABSTRACT:
In an optical fiber system for delivering laser, a laser beam is focused onto an optical fiber at an injection port of the system. The end portions of the fiber have cladding treatments to attenuate stray light and cladding mode light, so as to enhance the protection of the outer layer joint points. Photodetector sensors monitor scattered stray light, cladding mode light, and/or transmitted cladding mode light. Sensor signals are provided to a control unit for analyzing the fiber coupling performance. If need be, the control unit can control a laser shutter or the like to minimize or prevent damage. In materials processing applications, the photodetector signals can be analyzed to determine the processing status of a work piece.
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Black Bruce E.
Darby & Darby PC
Peace Rhonda S.
Quantronix Corporation
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