Patent ID: 9397748
Filing Date: 2016-07-19
CPC Classification: H04B

Claim Text:
1. A system for detecting an optical signal-to-noise ratio (OSNR), comprising a wavelength label loader and an OSNR detector, wherein the wavelength label loader is configured for loading a wavelength label signal of a frequency f the OSNR detector is configured for: analyzing the wavelength label signal to acquire a modulation depth corresponding to the wavelength label signal at the OSNR detector; and acquiring, according to the modulation depth corresponding to the wavelength label signal at the OSNR detector and the modulation depth corresponding to the wavelength label signal at the wavelength label loader, an OSNR of the optical signal of the wavelength, wherein the modulation depth corresponding to the wavelength label signal at the wavelength label loader is sent to the OSNR detector via an Optical Supervision Channel (OSC).