Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2005-03-15
2005-03-15
Sedighian, M. R. (Department: 2633)
Optical communications
Transmitter
Having particular modulation
C398S079000, C398S182000, C398S118000, C398S200000
Reexamination Certificate
active
06868236
ABSTRACT:
An apparatus and method for combining multiple optical beams into mode-scrambled optical signals. In one embodiment, the apparatus includes a plurality of laser beam sources, each to produce a modulated optical beam. A plurality of input fiber segments, each comprising a multimode optical fiber core, are operatively coupled at one end to a respective laser source to receive a respective modulated optical beam. A multimode optical beam combiner is used to operatively couple the output ends of the input fiber segments to the input end of an output fiber segment having a multimode optical fiber core. The modulated optical beams produced by the laser beam sources are combined into a single mode-scrambled optical signal. The apparatus enables multiple optical beams having similar wavelengths to be combined to increase optical signal strength. It also enables multiple optical beams having different wavelengths to be combined to form a wavelength division multiplexed signal.
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Pierce Robert M.
Rollins David L.
Wiltsey Thomas J.
Blakely , Sokoloff, Taylor & Zafman LLP
Sedighian M. R.
Terabeam Corporation
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