Method, system, and device for detecting optical signal-to-noise ratio

摘要

A method for detecting an optical signal-to-noise ratio (OSNR). A wavelength label loading end (11) loads a wavelength label signal in an optical signal, and sends a loading modulation depth of the wavelength label signal to an OSNR detection end (12) through a wavelength label channel or an optical monitoring channel. The OSNR detection end (12) obtains a loading modulation depth of a wavelength label signal loaded in each wavelength optical signal, parses the wavelength label signal to obtain a current modulation depth of the wavelength label signal, and obtains an OSNR value of each wavelength optical signal according to the loading modulation depth and the current modulation depth of the wavelength label signal. A system and device for detecting an OSNR applicable to OSNR tests of present optical signals with high rates of 40 G, 100 G, etc., and in particular to OSNR tests of polarization multiplexing optical signals.

主权项

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 in an optical signal, and sending a loading modulation depth in loading the wavelength label to the OSNR detector; and the OSNR detector is configured for: acquiring a loading modulation depth when a wavelength label is loaded in an optical signal of a wavelength; analyzing the wavelength label to acquire a current modulation depth of the wavelength label; and acquiring, according to the current modulation depth and the loading modulation depth of the wavelength label, an OSNR of the optical signal of the wavelength.