Title :
A dispersion law for virtually imaged phased-array spectral dispersers based on paraxial wave theory
Author :
Xiao, Shijun ; Weiner, Andrew M. ; Lin, Christopher
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
fDate :
4/1/2004 12:00:00 AM
Abstract :
We derive the spectral dispersion law for the virtually imaged phased array (VIPA) based on paraxial wave theory using the Fresnel diffraction analysis. The validity of the dispersion law is verified by comparison with experiments. This spectral dispersion law is compared to a previous law based on plane wave theory. At small incident angles where the VIPA provides its largest spectral dispersion, the paraxial wave law provides a much better fit to the data than the plane wave law does.
Keywords :
Fresnel diffraction; demultiplexing equipment; optical arrays; optical communication equipment; optical dispersion; optical fibre communication; Fresnel diffraction analysis; VIPA; paraxial wave theory; spectral dispersion law; virtually imaged phased array; Diffraction; Frequency; Optical arrays; Optical crosstalk; Optical films; Optical reflection; Optical refraction; Optical sensors; Optical variables control; Phased arrays;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2004.825210
