Title :
A Multiexposure Technology for Sampled Bragg Gratings and its Applications in Dual-Wavelength Lasing Generation and OCDMA En/Decoding
Author :
Li, Jingsi ; Cheng, Yun ; Yin, Zuowei ; Jia, Linghui ; Chen, Xiangfei ; Liu, Shengchun ; Li, Simin ; Lu, Yanqing
Author_Institution :
Nat. Lab. of Microstructures, Nanjing Univ., Nanjing, China
Abstract :
In this letter, a multiexposure technology for sampled Bragg gratings is proposed and investigated for the first time. Combined with reconstruction-equivalent-chirp technology, the useless zeroth-order channel can be eliminated and the plusmn1st-order channels can be enhanced significantly. The proposed method is applied experimentally to achieve a dual-wavelength fiber laser and is studied both numerically and experimentally in two ways for the optical code-division multiple access en/decoding system. Its properties may lead to more efficient design and fabrication of grating-based optical devices.
Keywords :
Bragg gratings; chirp modulation; code division multiple access; decoding; encoding; fibre lasers; optical design techniques; optical fibre fabrication; OCDMA decoding; OCDMA encoding; dual-wavelength fiber laser; dual-wavelength lasing generation; grating-based optical device fabrication; multiexposure technology; optical code-division multiple access; reconstruction-equivalent-chirp technology; sampled Bragg gratings; zeroth-order channel; Bragg gratings; dual-wavelength fiber laser; optical code-division multiple access (OCDMA) en/decoding;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2030877
