Measurement of In-Band Optical Noise Spectral Density

TL;DR

This paper introduces a novel method to measure in-band optical noise spectral density without relying on coherent detection or digital processing, validated through simulations and experiments.

Contribution

It presents a new measurement technique for in-band optical noise that simplifies the process by avoiding complex digital signal processing.

Findings

Method accurately measures in-band noise spectral density

Experimental results confirm feasibility of the approach

Can measure in-band nonlinear distortion power densities

Abstract

We present a method to measure the spectral density of in-band optical transmission impairments without coherent electrical reception and digital signal processing at the receiver. We determine the method's accuracy by numerical simulations and show experimentally its feasibility, including the measure of in-band nonlinear distortions power densities.