Optical transmitter and passive optical network using the same

Details Optical transmitter and passive optical network using the same Optical transmitter and passive optical network using the same

2008-07-08

2008-07-08

Phan, Hanh (Department: 2613)

Optical communications

Multiplex

Broadcast and distribution system

C398S066000, C398S067000, C398S068000, C398S069000, C398S070000, C398S071000, C398S082000, C398S079000, C398S084000, C398S085000, C398S087000, C398S091000, C398S092000, C398S094000, C398S098000, C398S099000, C398S100000, C398S182000, C398S183000, C398S192000, C398S194000, C385S024000, C385S037000, C385S058000, C385S059000

Reexamination Certificate

active

07398021

ABSTRACT:
An optical transmitter including a multi-lambda source to output injection light consisting of a plurality of injection wavelengths in channels, a circulator having a first port, a second port, and a third port, the circulator receiving the injection light at the first port, and outputting the received injection light to the second port, and further receiving signal light at the second port, and outputting the received signal light to the third port, an arrayed waveguide grating having a multiplexing port connected to the second port of the circulator, and a plurality of demultiplexing ports, spectrum-slicing injection light received from the circulator at the multiplexing port into a plurality of injection channels, and outputting the injection channels to the demultiplexing ports and further receiving and multiplexing a plurality of signal channels at the demultiplexing ports, into a signal light, and outputting the signal light to the multiplexing port, and a plurality of reflective semiconductor optical amplifiers connected to the demultiplexing ports of the arrayed waveguide grating, respectively, each of the reflective semiconductor optical amplifiers receiving an associated one of the injection channels, and amplifying the associated injection channel to generate an associated one of the signal channels.

REFERENCES:
patent: 2005/0286895 (2005-12-01), Lee et al.

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