Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2005-05-10
2005-05-10
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S088000, C385S014000, C385S089000
Reexamination Certificate
active
06892007
ABSTRACT:
Systems and methods of monitoring optical transmitter signals are described. In one aspect, an optical transmitter system includes a feedback block, an optical substrate, a source of input light within an operative wavelength range, and a detector. The feedback block is substantially transparent to light within the operative wavelength range and includes an optical fiber side having a light output and one or more reflectors, and an optical substrate side. The optical substrate is substantially transparent to light within the operative wavelength range. The optical substrate includes a device side having a light input, and a feedback block side that is coupled to the optical substrate side of the feedback block. The feedback block side has a splitter that is operable to split light that is received from the device side light input into an output beam that is directed toward the light output of the feedback block and a light sample that is directed toward a feedback block reflector. The source of input light is mounted to the device side of the optical substrate and is aligned for light transmission through the device side light input to the splitter. The detector is mounted to the device side of the optical substrate and is aligned for detection of a light sample that is transmitted from a feedback block reflector and through the feedback block and the optical substrate.
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patent: 20020075911 (2002-06-01), Cham et al.
Agilent Technologie,s Inc.
Ullah Akm Enayet
Wood Kevin S.
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