Compact tunable three-dimensional polymer optical waveguide comb filter

Wu, Qiang, Chan, Hau Ping, Chu, Pak L., Yu, Chongxiu and Hand, Duncan (2007) Compact tunable three-dimensional polymer optical waveguide comb filter. Optics Communications, 277 (1). pp. 89-92. ISSN 0030-4018

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Official URL: http://dx.doi.org/10.1016/j.optcom.2007.04.047

Abstract

A compact channel spacing tunable polymeric three-dimensional (3D) comb filter has been designed and fabricated. This comb filter is made of three waveguides laid in two different but parallel layers: one is in the lower layer and the other two are in the upper layer. These two waveguides in upper layer do not cross each other but instead each twice cross over the waveguide in the lower layer. At each crossing point an electrode heater is deposited on the top surface to adjust the coupling ratio between these guides. By supplying power to each heater pair, respectively, the channel spacing can be selected to be either 1.6 nm or 0.8 nm; in addition a flat-top spectral response may be obtained at the 1.6 nm channel spacing if power is supplied to both the heater pairs simultaneously.

Item Type: Article
Uncontrolled Keywords: waveguide, tunable
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Ay Okpokam
Date Deposited: 27 May 2015 08:58
Last Modified: 24 Oct 2017 08:54
URI: http://nrl.northumbria.ac.uk/id/eprint/22608

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