Wavelength reference for optical telecommunications based on a temperature-tunable silicon etalon

Abstract

A wavelength reference based on a temperature-tunable silicon Fabry–Perot etalon is presented. The device provides a compact and cost-effective solution for calibration of the wavelength scale from 1.3 μm to 1.7 μm. The reference is fully automated, needs a single characterization, and operates without an absolute wavelength reference. The performance of the device was estimated by comparing its fringes against acetylene absorption lines. The wavelength differences measured were found to be less than 1 pm.