Title :
Proposal on adoption of polarization-controlled switch for survivable fiber networks and demonstration of simultaneous FDM/WDM signal switching
Author :
Katsuyama, Yutaka ; Satake, Toshiaki ; Yoshizawa, Tetsuo
Author_Institution :
NTT, Ibaraki, Japan
fDate :
10/1/1992 12:00:00 AM
Abstract :
A polarization-controlled switch is proposed for use in the construction of survivable fiber networks. This switch ensures high survivability when fibers fail. The switching performance is demonstrated for FSK-modulated FDM signals and intensity-modulated WDM signals. The multiplexed signals are switched simultaneously and no degradation is observed in the bit-error-rate performance. The switch has an almost constant loss and a crosstalk of better than 20 dB in the 1.51-1.59 mm wavelength range, which is much wider than that of the Er 3+-doped optical amplifier gain spectrum
Keywords :
frequency division multiplexing; frequency shift keying; optical communication equipment; optical modulation; optical polarisers; optical switches; wavelength division multiplexing; 1.51 to 1.59 micron; FSK-modulated FDM signals; IR; PLZT; PbLaZrO3TiO3; WDM signal switching; bit-error-rate performance; constant loss; crosstalk; intensity-modulated WDM signals; multiplexed signals; polarisation beam splitters; polarisation rotator; polarization-controlled switch; survivable fiber networks; switching performance; Crosstalk; Degradation; Erbium; Frequency division multiplexing; Optical fiber polarization; Optical losses; Optical switches; Proposals; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Lightwave Technology, Journal of
