Patent ID: 8675470
Filing Date: 2014-03-18
Classification: H04B

Abstract:
1. A crosstalk coefficient estimating apparatus, for estimating a crosstalk coefficient of crosstalk inflicted on one channel of an optical fiber transmission system comprising two or more channels, the crosstalk coefficient estimating apparatus comprising: a complex conjugate unit to obtain a complex conjugate signal of a signal which is in one polarization-state and is from another channel other than said one channel; a multiplying unit to multiply the complex conjugate signal obtained by the complex conjugate unit with a signal which is in another polarization-state and from the another channel; and a filter to filter the result of the multiplication to obtain a crosstalk coefficient of crosstalk on a signal which is in one polarization-state and from said one channel, wherein a transmission function of the filter is set according to system parameters of the optical fiber transmission system.