Estimation of the characteristics of fiber-Bragg-grating-based demultiplexers versus temperature

摘要

Abstract: Demultiplexer is the key component of wavelength division multiplexing systems of telecommunications. This paper deals with theoretical investigation of temperature influence on fiber Bragg grating (FBG) based demultiplexes characteristics. At current moment FBG based demultiplexes are most advanced devices on market. In this paper, we describe and characterize a high performance wavelength demultiplexing devices based on a fiber Mach-Zehnder interferometer with photoinduced Bragg gratings in the interferometer arms and simple all-fiber demultiplexes based on single FBG with out-coupling of radiation from the fiber core. The values of wavelength channels shifts versus temperature are calculated for both types of demultiplexes. !3