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Delayed self-multiplex light source for frequency-agile transmitters

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4 Author(s)
O. Ishida ; NTT Opt. Network Syst Labs., Kanagawa, Japan ; S. Kuwano ; N. Shibata ; H. Ishii

The delayed self-multiplex (DSM) light sources proposed in this paper provide multiple frequency-agile outputs from a single tunable laser. The DSM light source employs multiple fiber delay lines and optical switches, and overcomes the intrinsic tuning-speed limitation and thermal frequency drift of the tunable laser. Practical switching performance restricted by the optical switch is analyzed and examined in a delayed self-duplex (DSD) light source constructed with a tunable DBR laser and a LiNbO3 electrooptic switch. Bit-error-free operation of the frequency-agile transmitter is achieved in 622 Mb/s transmission; the power penalty due to the DSD light source is 1.8 dB

Published in:

Journal of Lightwave Technology  (Volume:13 ,  Issue: 12 )