Temperature Effects in Fiber Couplers

Abstract

Directional Coupler is one of the devices used in signal transmission techniques in optical fiber communication systems, especially Wavelength Division Multiplexing (WDM). The directional coupler can be used as a sensitive sensor, one of which is based on wavelength shifts and coupling length shift. This paper simulates a shift in wavelength and coupling length based on the influence of temperature in the range of 30℃ to 230℃ based on the characteristics of power output. The wavelength used in this simulation is in the C-Band region, which is around 1550 nm. Temperature changes cause changes in the material refractive index. Temperature changes cause a shift in wavelength and coupling length increase which describes the characteristics of the thermo-optic effects on the directional couplers.

Micro channel cooled single emitter housing

“…In this section, we discuss simulation results of MCC and reference cooler with respect to average temperature and maximum temperature difference of semiconductors and optics. If too high, operating temperature and fluctuations of GaAs chips and optical components can negatively impact coupling efficiency due to wavelength shift (Alamtaha, Syahriar, & Burdah, 2019), accelerate thermal degradation (Egawa, Jimbo, Hasegawa, & Umeno, 1994)and cause misalignment of optical components due to thermal expansion (Corbacho, Kuiper, & Gill, 2020)].…”