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14 August 2003 Limits of DWDM with gratings and Fabry-Perots and alternate solutions
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High resolution DWDM devices based on the principles of gratings (planar, Bragg, AWG, etc.) and Fabry-Perots (etalon, Lummer-Gehrke plate, etc.) suffer from inherent limitations due to (i) temporal pulse stretching of data, and (ii) broadening of time integrated spectral (demuxed) fringes. While the relation, dνFdt >1, can account for these limitations, our analysis imply that dnF does not represent real, physical frequencies. We explain the broader implications of this interpretation in designing DWDM devices based on gratings and Fabry-Perots and illustrate how to use prisms, photonic crystals and non-linear devices for very high data rate per channel.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Chandrasekhar Roychoudhuri, DongIk Lee, Yongyuan Jiang, Shigeo Kittaka, Masatoshi Nara, Vladimir V. Serikov, and Masahiro Oikawa "Limits of DWDM with gratings and Fabry-Perots and alternate solutions", Proc. SPIE 5246, Active and Passive Optical Components for WDM Communications III, (14 August 2003);

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