Analysis of coating design in a virtually imaged phased array (VIPA) chromatic dispersion compensator

Christopher Lin; Masataka Shirasaki

doi:10.1117/12.424823

20 April 2001 Analysis of coating design in a virtually imaged phased array (VIPA) chromatic dispersion compensator

Christopher Lin, Masataka Shirasaki

Proceedings Volume 4289, WDM and Photonic Switching Devices for Network Applications II; (2001) https://doi.org/10.1117/12.424823
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

Chromatic dispersion in optical fibers limits the transmission distance of high bit-rate optical communications systems. A virtually imaged phase array (VIPA) can perform chromatic dispersion compensation on multiple WDM channels simultaneously. A VIPA is generated by a tilted etalon with a perfectly reflective coating on one side and a partially transmissive coating on the other side. Light is focused into the etalon through an anti-reflection coated input/output window on the reflective side. The etalon produces large angular dispersion which is converted into chromatic dispersion using a lens and mirror. The insertion loss and bandwidth of the VIPA chromatic dispersion compensation system is governed by the shape of the etalon's transmissive coating. Numerical simulations evaluate the insertion loss and bandwidth of a VIPA chromatic dispersion compensator configured with three different transmissive coating designs. Overall, a 2-level coating is superior to both constant and linear coatings. The constant coating exhibits wide bandwidth but high insertion loss. The linear coating demonstrates low insertion loss but narrow bandwidth. The constant coating features both low insertion loss and wide bandwidth.

Citation Download Citation

Christopher Lin and Masataka Shirasaki "Analysis of coating design in a virtually imaged phased array (VIPA) chromatic dispersion compensator", Proc. SPIE 4289, WDM and Photonic Switching Devices for Network Applications II, (20 April 2001); https://doi.org/10.1117/12.424823

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