Autors: Deneva, M. A., Nenchev, M., Stoykova, E.
Title: "Combined implementation of controllable beam splitting and wavelength division multiplexing using tunable interference wedged structures”
Keywords: beam splitting; WDM, wedged interference structure, optical

Abstract: The focus is on development and implementation of competitive optical elements based on tunable interference wedged structures. The structure can be single interference wedge or composition of superimposed wedged layers. We used the structures to build new wavelength division multiplexing (WDM) element and realized coupling of the elements with fiber optical system that is of essential interest for optical communications. Under illumination with multi-wavelengths beam, the composed WDM structure in the fiber system provides precisely controllable wavelength selection (resolution better than 0.01 nm) within a range of > 15 nm and with controlled continuously variable transitivity from 1-3 to 80%. The non-transmitted power with the non-selected and completely reflected light is directed to the next output (theoretical loss of the system ~ 5 %). The WDM-structure has completely independent spectral selection of each output/input without influence between the tuning of the channels.


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SPIE, vol. 11029, pp. 110290S-1 - 9, 2019, United States, The International Society for Optics and Photonics, DOI 10.1117/12.2520509

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

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