Estimating System OSNR With a Digital Coherent Transceiver
| Autor: | Rongqing Hui, Doug Charlton, Charles Laperle, Maurice O'Sullivan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Noise measurement
business.industry Computer science Noise (signal processing) Physics::Optics Optical polarization Signal Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Signal-to-noise ratio Optical Carrier transmission rates Electronic engineering Electrical and Electronic Engineering Transceiver business Digital signal processing Computer Science::Information Theory |
| Zdroj: | IEEE Photonics Technology Letters. 33:743-746 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/lpt.2021.3091390 |
| Popis: | We demonstrate a technique of evaluating optical signal to noise ratio (OSNR) associated with an optical carrier in a fiber-optic system using a commercial coherent optical transceiver equipped with digital signal processing capability. The procedure of measuring noises caused by the transmitter and the receiver is outlined, and these transceiver-related noises need to be taken into account in order to accurately evaluate the system OSNR. Through digital polarization-demultiplexing and polarization nulling in the receiver, it is possible to extract the noise underneath the optical signal, and to measure the tilt of the ASE noise spectrum within the optical signal bandwidth. |
| Databáze: | OpenAIRE |
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