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Optical Fiber Telecommunications VA by Alan E Willner, Tingye Li, Ivan Kaminow

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Chapter 18

Technology and Applications of Liquid Crystal on Silicon (LCoS) in Telecommunications

Stephen Frisken, Ian Clarke and Simon Poole,    All with Finisar Australia Ltd., Australia

18.1 Introduction

The use of liquid crystal technology in telecommunications is now well established. Initially, applications were limited to attenuation and simple binary switches, but more recently we have seen the adoption of liquid crystal into gain equalizers, wavelength blockers, and then into wavelength switches. Within these switches, the control of light on a pixel-by-pixel basis has been enabled by developments in the display technologies and in particular by Liquid Crystal on Silicon. (LCoS). This chapter seeks to clarify the basic operating principles ...

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