The Study of Single Longitudinal Mode Laser and Deal-Output Multi-wavelengh Laser by using Stimulated Brillouin Scattering

• Main Authors: Yi-Ting Huang, 黃義庭
• Other Authors: Jeng-Cheng Dung
• Format: Others
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/4xzzsd

碩士 === 國立東華大學 === 電機工程學系 === 102 === In this paper, we design a single wavelength Brillouin laser and a multi-wavelength Brillouin laser with stimulated Brillouin scattering (SBS). First, we set up a single-wavelength Brillouin ring laser and Mach Zander Interferometer was investigated. Then dual output multi-wavelength Brillouin laser. In the first part, we use a simple architecture to measure the characteristics of Raman scattering and Brillouin scattering by using HNLF a medium, as optimized single wavelength Brillouin ring laser. We suppressed Raman Scattering Level by changing the cavity loss achieve of single-wavelength Brillouin ring laser. The laser intensity is 0.82dBm, the 3dB bandwidth is 0.009nm. We made a single-wavelength single-longitudinal-mode laser based on optimized single wavelength Brillouin ring laser. We constructed a adjustable Mach Zander interferometer by using polarization controller (PC) and optical variable delay line (OVDL). The range of adjustable interfering spacing was from the maximized value that is 4.38 nm to the least value that is 0.036 nm. The interference intensity of single pass and double pass was 11dB and 23 dB, respectively. In the second part, we constructed a dual-output multi-wavelength Brillouin laser by using the 4 part circulator and the 4 part coupler and EDFA. We constructed two cavities with different paths. Finally, We made the optimized configuration that was a dual-output laser that was both three wavelength when using a DCF 11.4km and a 60:40 coupler.