Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-04-11
2008-07-01
Font, Frank G (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S014000, C385S015000, C385S031000, C385S046000, C385S050000, C250S227110, C250S227230
Reexamination Certificate
active
07394953
ABSTRACT:
System, devices and methods are described that provide an integrated optical decombiner or optical combiner having both unamplified paths and amplified paths on which power monitoring and control may be located. A preferred multiplexing/demultiplexing optical path through the combiner/decombiner and a corresponding waveguide output/input is identified and optically coupled to a piece of fiber. Temperature control may be provided to tune an arrayed waveguide grating within the combiner/decombiner and minimize wavelength drift therein. Integrated power monitoring may be employed on one or more of the amplified waveguide paths to ensure that a preferred power level or range is maintained on an optical signal.
REFERENCES:
patent: 2003/0095736 (2003-05-01), Kish et al.
patent: 2003/0095737 (2003-05-01), Welch et al.
patent: 2004/0033004 (2004-02-01), Welch et al.
patent: 2006/0141649 (2006-06-01), Joyner et al.
Nagarajan et al., “Large-Scale Photonic Integrated Circuits”,IEEE Journal of Selected Topics in Quantum Electronics, Jan./Feb. 2005, pp. 50-65, vol. 11(1).
Evans Peter W.
Kato Masaki
Nagarajan Radhakrishnan L.
Pleumeekers Jacco L.
Ziari Mehrdad
Font Frank G
Infinera Corporation
Lepisto Ryan
North Weber & Baugh LLP
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