CUED Publications database

Compact holographic optical interconnections using nematic liquid crystal spatial light modulators

Lu, T and Robertson, B and Collings, N (2011) Compact holographic optical interconnections using nematic liquid crystal spatial light modulators. Proceedings of SPIE - The International Society for Optical Engineering, 8167. ISSN 0277-786X

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Abstract

In a fibre-optic communication network, the wavelength-division multiplexing (WDM) technique enables an expansion of the data-carrying capacity of optical fibres. This can be achieved by transmitting different channels on a single optical fibre, with each channel modulating a different wavelength. In order to access and manipulate these channels at a node of the network, a compact holographic optical switch is designed, modelled, and constructed. The structure of such a switch consists of a series of optical components which are used to collimate the beam from the input, de-multiplex each individual wavelength into separated channels, manipulate the separated channels, and reshape the beam to the output. A spatial light modulator (SLM) is crucial in this system, offering control and flexibility at the channel manipulation stage, and providing the ability to redirect light into the desired output fibre. This is achieved by the use of a 2-D analogue phase computer generated hologram (CGH) based on liquid crystal on silicon (LCOS) technology. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Item Type: Article
Uncontrolled Keywords: holographic interconnections Nematic liquid crystal optical phase modulation spatial light modulator
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron job
Date Deposited: 16 Jul 2015 14:06
Last Modified: 03 Aug 2015 09:00
DOI: 10.1117/12.895161