| 摘要 |
The present invention relates to the field of optical communication. A method and a device for detecting Inband Optical Signal to Noise Ratio (OSNR) are provided in the present invention, wherein the method includes the following steps: obtaining a signal power P CW1 of a first optical signal at a transmitting end, a signal power P CW2 of a second optical signal at the transmitting end, and a total signal power P S ; obtaining a ratio k1 of the P CW2 to the P S and a ratio k2 of the P CW1 to the P CW2 according to the P CW1 , P CW2 and P S ; obtaining a signal power P' CW1 of the first optical signal at a detection point and a signal power P' CW2 of the second optical signal at the detection point; obtaining a ratio K3 of the P' CW1 to the P' CW2 according to the P' CW1 and the P' CW2 ; and obtaining the Optical Signal to Noise Ratio according to the k1, k2, and k3. The present invention is able to reduce device cost, increase scanning speed and exhibit wide applicability. |
