发明名称 |
Dynamic measurement of and compensation for impairments to optical data communication pulses |
摘要 |
A photomultiplier module (PMT), preferably a PMT with a gallium arsenide (GaAs) photocathode, is used as a N-photon detector (N is an integer >=2). The PMT detects the N-photon absorption rate of an optical signal having a wavelength range extending from 1.0 mum to an upper wavelength region that increases as the number of photons simultaneously absorbed by the PMT increases beyond two. The N-photon absorption rate is used by a signal compensation apparatus to reduce impairments which affect the rate, such as group velocity dispersion and/or polarization mode dispersion, in a received optical pulse communication signal. The N-photon absorption rate can also be used to determine the optical signal-to-noise ratio of a received optical pulse communication signal, and/or to synchronize a second optical pulse signal with the first optical signal.
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申请公布号 |
US2003202795(A1) |
申请公布日期 |
2003.10.30 |
申请号 |
US20020128939 |
申请日期 |
2002.04.24 |
申请人 |
GARCIA HERNANDO;KILPER DANIEL CHARLES;ROTH JEFFREY MATTHEW;XU CHUNHUI |
发明人 |
GARCIA HERNANDO;KILPER DANIEL CHARLES;ROTH JEFFREY MATTHEW;XU CHUNHUI |
分类号 |
G01J11/00;H04B10/08;H04B10/18;(IPC1-7):H04B10/12 |
主分类号 |
G01J11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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