In this letter, we evaluate how the background noise is modified within a whiskered-shaped star coupler, optimized to reduce the reflectivity of its internal surfaces to reduce the back-scattered light. This letter is carried out by analyzing the Fabry-Perot interference due to the reflections between the input focal plane of the star coupler and the output facet of the waveguides. By comparing a whiskered star coupler with a standard one, we find a reduction in the star coupler reflectance of more than one order of magnitude. The experimental results are supported by a theoretical model and by numerical simulations.

Reflectance Reduction in a Whiskered SOI Star Coupler / Castellan, Claudio; Tondini, Stefano; Mancinelli, Mattia; Kopp, Christophe; Pavesi, Lorenzo. - In: IEEE PHOTONICS TECHNOLOGY LETTERS. - ISSN 1041-1135. - STAMPA. - 2016, 28:17(2016), pp. 1870-1873. [10.1109/LPT.2016.2574364]

Reflectance Reduction in a Whiskered SOI Star Coupler

Castellan, Claudio;Tondini, Stefano;Mancinelli, Mattia;Pavesi, Lorenzo
2016-01-01

Abstract

In this letter, we evaluate how the background noise is modified within a whiskered-shaped star coupler, optimized to reduce the reflectivity of its internal surfaces to reduce the back-scattered light. This letter is carried out by analyzing the Fabry-Perot interference due to the reflections between the input focal plane of the star coupler and the output facet of the waveguides. By comparing a whiskered star coupler with a standard one, we find a reduction in the star coupler reflectance of more than one order of magnitude. The experimental results are supported by a theoretical model and by numerical simulations.
2016
17
Castellan, Claudio; Tondini, Stefano; Mancinelli, Mattia; Kopp, Christophe; Pavesi, Lorenzo
Reflectance Reduction in a Whiskered SOI Star Coupler / Castellan, Claudio; Tondini, Stefano; Mancinelli, Mattia; Kopp, Christophe; Pavesi, Lorenzo. - In: IEEE PHOTONICS TECHNOLOGY LETTERS. - ISSN 1041-1135. - STAMPA. - 2016, 28:17(2016), pp. 1870-1873. [10.1109/LPT.2016.2574364]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/147688
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