Optical waveguides – Integrated optical circuit
Reexamination Certificate
2006-03-07
2006-03-07
Font, Frank G. (Department: 2883)
Optical waveguides
Integrated optical circuit
C398S091000, C372S026000, C372S032000
Reexamination Certificate
active
07010185
ABSTRACT:
A method of deploying a passive optical combiner that is a broad bandwidth spectral wavelength combiner for combining the outputs from multiples transmitter photonic integrated circuit (TxPIC) chips and, thereafter, the amplification of the combined channel signals with a booster optical amplifier couple between the passive optical combiner and the fiber transmission link. The booster optical amplifier may be a rear earth fiber amplifier, such as an erbium doped fiber amplifier (EDFA), or one or more semiconductor optical amplifiers (SOAs) on one or more semiconductor chips. Such a combination of optical components simplifies the design of individual TxPICs and other such optical communication PICs, which has to take into consideration the nonlinear effects of difficult, high loss single mode fiber (SMF) links or other fiber-type links by allowing a higher power per channel to be achieved compared to the case where channel amplification is attempted directly on the TxPIC chip through the deployment of on-chip optical amplifiers, such as semiconductor optical amplifiers (SOAs), integrated in locations following the electro-optic (EO) modulators, if not integrated also at other locations on the same chip.
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Chiang Ting-Kuang
Dominic Vincent G.
Grubb Stephen G.
Mitchell Matthew L.
Taylor Robert B.
Carothers, Jr. W. Douglas
Font Frank G.
Hughes James P.
Infinera Corporation
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