Electronic compensation of impairments using wavelet filters for backward propagation
US8326159B2 · kind B2 · utility
1Cited by
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20Claims
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Key dates
| Filing date | Mar 19, 2010 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | May 12, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/002
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods of compensating for transmission impairment over an optical transmission channel are disclosed. The optical transmission channel includes an optical fiber and an optical amplifier. One such method includes: receiving an optical signal which has been distorted in the physical domain by an optical transmission channel; and solving a non-linear Schrödinger equation (NLSE) using a split-step Fourier Method (SSFM). The NLSE describes a virtual optical fiber corresponding to the optical fiber. The SSFM implements a linear operator with a wavelet-based FIR filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.