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Semiconductor laser diode optical amplifiers/gates in photonic packet switching

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4 Author(s)
Shibata, Y. ; NTT Opt. Network Syst., Kanagawa, Japan ; Yamada, Y. ; Habara, K. ; Yoshimoto, N.

In this paper, we will describe how semiconductor laser diode optical amplifiers/gates can be used in the photonic packet switching systems based on wavelength division multiplexed (WDM) techniques. First, we show that cross-gain modulation (XGM) can be suppressed when the device is used in the transparent condition of the waveguide material even when the input signal power exceeds +18 dBm. We then discuss an appropriate encoding for the optical signal. Experimental results show that high bit rate Manchester-encoding enables the use of semiconductor laser diode optical amplifiers/gates in the gain condition as well as the transparent condition. Finally, a new photonic packet receiver which utilizes a semiconductor laser diode optical amplifier as a packet power equalizer is proposed. This receiver accepts 17 dB power fluctuation at nanosecond speed for 10 Gb/s Manchester-encoded signal

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Lightwave Technology, Journal of  (Volume:16 ,  Issue: 12 )