The performance of a traveling-wave-type semiconductor laser amplifier as a booster in multiwavelength simultaneous amplification
- NTT Transmission Systems Labs., 1-2356 Take, Yokosuka-shi, Kanagawa (JP)
The performance of a traveling-wave-type semiconductor laser amplifier (TWA) as a booster in multiwavelength simultaneous amplification is analytically and experimentally studied. The theoretical worst and the average interchannel crosstalk are shown as a function of normalized input power. The validity of normalization by saturation input power is confirmed with experimental data. This normalized input power must be set below {minus} 20 and {minus} 10 dB for multiwavelength number of 20 and 4, respectively, to attain an average interchannel crosstalk of under {minus} 10 dB. The optical loss that can compensated using a TWA as booster amplifier is analytically introduced including crosstalk for evaluating the input dynamic range. A multiwavelength transmission system could be designed for optical loss that could be compensated by employing the average interchannel crosstalk. Theoretical evaluations are confirmed with a transmission experiment involving four-channel intensity-modulated signal simultaneous amplification at 400 Mbit/s.
- OSTI ID:
- 6970864
- Journal Information:
- Journal of Lightwave Technology; (USA), Journal Name: Journal of Lightwave Technology; (USA) Vol. 8:1; ISSN 0733-8724; ISSN JLTED
- Country of Publication:
- United States
- Language:
- English
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