Experimental and theoretical study of hyperfine WDM demultiplexer performance using the virtually imaged phased-array (VIPA)
- Resource Type
- Periodical
- Authors
- Shijun Xiao; Weiner, A.M.; Lin, C.
- Source
- Journal of Lightwave Technology J. Lightwave Technol. Lightwave Technology, Journal of. 23(3):1456-1467 Mar, 2005
- Subject
- Communication, Networking and Broadcast Technologies
Photonics and Electrooptics
Wavelength division multiplexing
Passband
Arrayed waveguide gratings
Diffraction
Performance analysis
Bandwidth
Laser mode locking
Shape
Reflectivity
Image analysis
Optical devices
spectral dispersers
wavelength demultiplexers
- Language
- ISSN
- 0733-8724
1558-2213
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.