Autors: Marin Nenchev., Deneva, M. A., Elena Stoykova.
Title: "Competitive light wavelength division multiplexing element based on tunable interference wedged structures"
Keywords: interference, Fizeau wedge, composite tunable wedged interference structure, wavelength division multiplexing

Abstract: Interference Wedged Structure (IWS) is an optical element with useful properties for optical metrology, spectral analysis and optical communications. We introduced a new perspective element of the type – Composite Tunable Interference Wedged Structure (CTIWS) - list-like sequence of superimposed wedged layers each with reflecting surfaces. For conveniently chosen apex angles and layers’ thickness, CTIWS assure high spectral selectivity to 0.01nm within a spectral range of 10 nm at smooth tunability by simple sliding along the wedge arm. Adapting Fabry-Perot theory, a simple physical description of the IWS and CTIWS was developed. For most important practical cases the results are similar to the ones for complex exact analytical description. Theoretical predictions are confirmed by experimental results. Based on IWS and CTIWS combination, new lossless WDM element is introduced and studied with independent tuning of each output/input, appropriate for fiber optical communications systems.


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, vol. 11047, pp. 110471F-1 - 9, 2019, United States, International Society for Optics and Photonics, DOI 10.1117/12.2516698

Copyright (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE)

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