发明名称 Optical multiplexer and cross-switch using etched liquid crystal fabry-perot etalons having enhanced spectral resolution and transmission characteristic
摘要 A novel aspect of the invention is a structural arrangement to widen a Fabry-Perot gap beyond a 100-micron LC thickness. The widening permits greatly enhanced spectral discrimination (i.e. many more WDM channels) across the device response range, which is expanded to ITU standards by use of a twin etalon configuration. A liquid crystal optical multiplexer according to the present invention is a two-etalon Fabry-Perot laser etched into many (>100) sub-etalons in a rectangular array. Each sub-etalon is independently tunable and can be coupled to a distinct fiber. Any single sub-etalon or random combination of sub-etalons is free to be tuned to a particular wavelength corresponding to one of the input channels. This allows for any combination of signals (i.e. digital video, data and voice) in a signal broadband channel to be switched to any of several receivers. Wavelength division multiplexing (WDM) is used to combine or separate individual types of signals from a single fiber. Phase-matching coatings are used on the materials within the Fabry-Perot gap, thereby enhancing transmission performance of the WDM device.
申请公布号 US6812993(B2) 申请公布日期 2004.11.02
申请号 US20030404417 申请日期 2003.04.01
申请人 SCIENTIFIC SOLUTIONS, INC. 发明人 NOTO JOHN;KERR ROBERT B.;ZHANG HAILIANG;MARDER WILLIAM Z.;WARREN ANTHONY C.
分类号 G02B6/34;G02B6/35;G02B26/00;G02B26/02;G02F1/21;(IPC1-7):G02F1/13;G02F1/134;G02F1/133 主分类号 G02B6/34
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