发明名称 |
OPTICAL SIGNAL TIME-SCALING ARRANGEMENT |
摘要 |
A signal time-scaling arrangement utilises a known configuration comprising the use of a laser which has its wavelength varied over time, a modulator coupled to the laser and to a modulating analogue electrical source and a dispersion means coupled to the output of the modulator and providing at its output a signal which is a stretched version of the analogue modulating signal, but provides for the modulator to be a single-sideband modulator instead of double-sideband. The effect of this is to enable the use of a much simple laser-control system involving a CW laser output which is wavelength-ramped continuously between quite narrow wavelength limits, while allowing the use of a dispersion means having a wide dispersion characteristic in order to provide the required degree of time-scaling. The invention is application to an ADC system or to a Doppler system.
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申请公布号 |
WO0169820(A1) |
申请公布日期 |
2001.09.20 |
申请号 |
WO2001GB01118 |
申请日期 |
2001.03.14 |
申请人 |
MARCONI CASWELL LIMITED;GRIFFIN, ROBERT, ANTHONY |
发明人 |
GRIFFIN, ROBERT, ANTHONY |
分类号 |
G02F7/00;(IPC1-7):H04B10/155 |
主分类号 |
G02F7/00 |
代理机构 |
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