Title :
Experimental and theoretical study of hyperfine WDM demultiplexer performance using the virtually imaged phased-array (VIPA)
Author :
Xiao, Shijun ; Weiner, Andrew M. ; Lin, Christopher
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
fDate :
3/1/2005 12:00:00 AM
Abstract :
We have developed a Fresnel diffraction analysis that provides an analytic expression for the passband response of virtually imaged phased-array (VIPA) demultiplexers. Our analysis shows that although the passband can be inherently symmetric, a strong asymmetry can develop when the output plane is detuned longitudinally. The symmetric passband has the minimum -3 dB transmission bandwidth. We also identify a spatial chirp effect that arises when the passband becomes asymmetric. Our theoretical predictions are confirmed via experiment. The experimental results include a demonstration of a hyperfine wavelength demultiplexing response with 10 pm (1.25 GHz) -3 dB transmission bandwidth.
Keywords :
Fresnel diffraction; demultiplexing equipment; optical arrays; optical communication equipment; wavelength division multiplexing; 1.25 GHz; Fresnel diffraction analysis; VIPA; hyperfine WDM demultiplexer; passband response; spatial chirp effect; virtually imaged phased-array; Arrayed waveguide gratings; Bandwidth; Diffraction; Image analysis; Laser mode locking; Passband; Performance analysis; Reflectivity; Shape; Wavelength division multiplexing; Optical devices; spectral dispersers; wavelength demultiplexers;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.843531