Title :
Multichannel operation of an integrated acoustooptic wavelength routing switch for WDM systems
Author :
d´Alessandro, A. ; Smith, D.A. ; Baran, J.E.
Author_Institution :
Bellcore, Red Bank, NJ, USA
fDate :
3/1/1994 12:00:00 AM
Abstract :
Polarization independent acousto-optic tunable filters (PIAOTF´s) can operate as transparent wavelength-selective crossconnects to route signals in wavelength division multiplexed optical networks. In this paper, a new low power PIAOTF is characterized as a switch in multiwavelength operation, using four equally spaced lightwave signals with wavelengths between 1546 nm and 1558 nm. Interchannel interference due to sidelobe excitation is lower than /spl minus/11 dB for single wavelength switching and is equal to /spl minus/6 dB in the extreme case of simultaneous switching of all wavelength channels. Sources of interport and interchannel crosstalk for single and multiple wavelength switching are identified.<>
Keywords :
acousto-optical devices; integrated optics; multiplexing equipment; optical switches; tuning; wavelength division multiplexing; 1546 to 1558 nm; WDM systems; equally spaced lightwave signals; integrated acoustooptic wavelength routing switch; interchannel crosstalk; interchannel interference; interport crosstalk; low power PIAOTF; multichannel operation; multiple wavelength switching; multiwavelength operation; polarization independent acousto-optic tunable filters; route signals; sidelobe excitation; simultaneous switching; single wavelength switching; transparent wavelength-selective crossconnects; wavelength channels; wavelength division multiplexed optical networks; Optical crosstalk; Optical fiber networks; Optical filters; Optical polarization; Optical switches; Optical waveguides; Resonance; Waveguide junctions; Wavelength division multiplexing; Wavelength routing;
Journal_Title :
Photonics Technology Letters, IEEE
