光学学报, 2007, 27 (9): 1658, 网络出版: 2007-10-17   

利用倾斜光纤光栅的可开关双波长光纤激光器

Switchable Dual-Wavelength Erbium-Doped Fiber Laser with a Tilted Fiber Bragg Grating
作者单位
南开大学现代光学研究所, 天津 300071
摘要
报导了一种在四波混频作用下利用倾斜光纤布拉格光栅进行波长选择的可开关双波长掺铒光纤激光器。通过将倾斜光纤光栅与单模光纤进行横向错位焊接,使光栅的反向LP01和LP11两个模式具有相近的有效反射率,从而可以用来进行激光器的双波长选择。接入腔内的一段高非线性光子晶体光纤引入的四波混频效应克服了模式竞争,使得双波长激光在室温下稳定振荡。腔内起偏器和偏振控制器的联合作用可产生依赖于波长的损耗,以补偿光纤光栅两反射峰峰值的大小差异。基于以上原理,通过调节腔内的偏振态,该激光器实现了室温下稳定的双波长输出,也实现了在两波长之间的转换。两波长激光均有超过45 dB的信噪比,最大的功率波动为0.8 dB
Abstract
A four-wave mixing (FWM) assisted dual-wavelength erbium-doped fiber laser with a tilted fiber Bragg grating (TFBG) for wavelength switch is reported. The transverse-offset-spliced tilted fiber grating on single-mode fiber ensures that the two effective reflectivities of the reverse LP01 mode and LP11 mode are close enough to realize the dual-wavelength switch for laser. FWM process induced by high-nonlinearity photonic crystal fiber (HNL-PCF) avoids mode competition and ensures stable dual-wavelength oscillation at room temperature. The conjunction of a polarization controller (PC) and a polarizer introduces wavelength-dependent cavity loss and balances the reflectivity difference of the two wavelengths. By adjusting the intracavity polarization state, the proposed laser can operate in stable dual-wavelength or switch between two wavelengths at room temperature. The two lasing lines have a high signal-noise-ratio (OSNR) more than 45 dB and a maximum power fluctuation of 0.8 dB.
参考文献

[1] . . Room-temperature multi frequency erbium-doped fiber lasers anchored on the ITU frequency grid[J]. J. Lightwave Technol., 2000, 18(6): 825-829.

[2] . Graydon, W. H. Loh, R. I. Laming et al.. Triple-frequency operation of an Er-doped twincore fiber loop laser[J]. IEEE Photon. Technol. Lett., 1996, 8(1): 63-65.

[3] Sun Guoyong, Qu Ronghui, Yang Jing et al.. Study on stable multi-wavelength eribum-doped fiber laser at room temperature[J]. Acta Optica Sinica, 2005, 25(6): 821~824 (in Chinese)
孙国勇,瞿荣辉,杨敬 等. 室温下稳定的多波长掺铒光纤激光器的研究[J]. 光学学报, 2005, 25(6): 821~824

[4] . . Stable and uniform dual-wavelength erbium-doped fiber laser based on fiber Bragg gratings and photonic crystal fiber[J]. Opt. Exp., 2005, 13(1): 142-147.

[5] . K. A. Wai. Stable and uniform multiwavelength erbium-doped fiber laser using nonlinear polarization rotation[J]. Opt. Exp., 2006, 14(18): 8205-8210.

[6] . Erdogan, J. E. Sipe. Tilted fiber phase gratings[J]. J. Opt. Soc. Am. A, 1996, 13(2): 296-313.

[7] . J. Hewlett, J. D. Love, G. Meltz et al.. Coupling characteristics of photo-induced Bragg gratings in depressed- and matched cladding fibre[J]. Opt. and Quant. Electron., 1996, 28: 1641-1654.

[8] . . Temperature-independent strain sensor system using a tilted fiber Bragg grating demodulator[J]. IEEE Photon. Technol. Lett., 1998, 10(10): 1461-1463.

[9] . S. Westbrook, T. A. Strasser, T. Erdogan. In-line polarimeter using blazed fiber gratings[J]. IEEE Photon. Technol. Lett., 2000, 12(10): 1352-1354.

[10] . Caucheteur, P. Megret . Demodulation technique for weakly titled fiber Bragg grating refractometer[J]. IEEE Photon. Technol. Lett., 2005, 17(12): 2703-2705.

[11] Wang Qingyue, Hu Minglie, Chai Lu. Progress in nonlinear optics with photonic crystal fibers[J]. Chin. J. Lasers, 2006, 33(1): 57~66 (in Chinese)
王清月,胡明列,柴路. 光子晶体光纤非线性光学研究新进展[J]. 中国激光, 2006, 33(1): 57~66

徐玲玲, 金龙, 开桂云, 张键, 刘艳格, 袁树忠, 董孝义. 利用倾斜光纤光栅的可开关双波长光纤激光器[J]. 光学学报, 2007, 27(9): 1658. 徐玲玲, 金龙, 开桂云, 张键, 刘艳格, 袁树忠, 董孝义. Switchable Dual-Wavelength Erbium-Doped Fiber Laser with a Tilted Fiber Bragg Grating[J]. Acta Optica Sinica, 2007, 27(9): 1658.

本文已被 6 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!