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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zhu Liang Yu Liu, G.N. Ran Zhou Zhenghui Gu Yuanqing Li |
| Copyright Year | 1989 |
| Abstract | In this letter, we propose a template-matching (TM) method for monitoring optical power from greatly broadened optical spectrum acquired by a scanning tunable optical filter (TOF). Conventional methods, such as least squares (LS) and regularized spare recovery (RSR) methods, suffer performance degradation when the power discrepancies between adjacent channels are significant. In addition to the exploitation of prior information on channels and signal modulation formats, the proposed TM method further uses L1 optimization to alleviate the relative error in power estimation, especially for channels with weak signal power. Experimental results demonstrated that the TM method can be used to accurately monitor signal power of mixed 10/40-Gb/s wavelength-division-multiplexing (WDM) channels with 50-GHz channel spacing via commercial low-cost TOFs. This technique also has higher immunity to system errors as well as the dynamic range of the signal power discrepancies between adjacent channels. |
| Sponsorship | IEEE Lasers and Electro-Optics Society |
| Starting Page | 1388 |
| Ending Page | 1390 |
| Page Count | 3 |
| File Size | 550826 |
| File Format | |
| ISSN | 10411135 |
| Volume Number | 23 |
| Issue Number | 19 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-10-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Adaptive optics Optical signal processing Channel estimation Monitoring Optical filters Modulation Estimation tunable optical filter (TOF) $L_{1}$ optimization optical performance monitoring template matching (TM) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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