光子学报, 2010, 39 (2): 238, 网络出版: 2010-05-24   

一种通道数可变的光纤光栅梳状滤波器

Hybrid Fiber Grating-based Optical Comb Filters with Changeable Channel Numbers
作者单位
1 中国计量学院光电子技术研究所,杭州 310018
2 南洋理工大学网络技术研究中心, 新加坡 639798
3 南洋理工大学化学与生物医学工程学院, 新加坡 639798
摘要
利用级联长周期光纤光栅与具有宽带反射功能的啁啾光纤光栅,构成了一种反射型的光纤光栅梳状滤波器.由于光在输出前经过两次干涉滤波作用,所以该梳状滤波器的消光比与透射输出型(即反射前)相比,增加了一倍.而且,通过调节啁啾光纤光栅的反射带宽,可以改变滤波器输出信道的数目.实验中利用弹性梁弯曲的方法,获得了两个可调的光纤光栅梳状滤波器,其信道数可分别在1~5和3~9之间的奇数间调谐(如果改变啁啾光纤光栅的初始中心波长,也可以获得偶数信道间的调谐).
Abstract
An in-fiber Mach-Zehnder interferometer filter based on a pair of long-period fiber gratings (LPGs) had been operated in the reflection mode by incorporating a broadband chirped-fiber Bragg grating (CFBG) or an optical fiber mirror reflector.As a result,the extinction ratio has been nearly doubled and,by tuning chirp rate,i.e.reflection bandwidth of the CFBG using a beam-bending method,channel number of the formed optical comb filter can be easily changed.In our experiment,two comb filters with channel numbers being changed among odd ones from 1 to 5 and 3 to 9 have been achieved,respectively.Even channel filtering can also be achieved if the center wavelength of the chirped fiber grating is changable.
参考文献

[1] 王新伟,盛秋琴.应力长周期光纤光栅透射谱中旁瓣的抑制[J].光子学报,2008,37(11):2198-2202.

    WANG X W,SHEN Q Q.Sidelobe suppresion of mechanically-induced long-period fiber gratings[J].Acta Photonica Sinica,2008,37(11): 2198-2202.

[2] 曾春红,孔梅,张健.带有对称啁啾光纤光栅的 Sagnac 环滤波器[J].光子学报,2008,37( 4):652-656.

    ZENG C M,KONG M,ZHANG J.Fiber sagnac loop filter with a symmetrical chirped fiber Bragg grating [J].Acta Photonica Sinica,2008,37(4): 652-656.

[3] 葛荆,陈向飞,谢世钟.基于光纤光栅的标准具[J].光子学报,2006,35(3):425-427.

    GE J,CHEN X F,XIE S Z.Novel etalon based on strongly chirped sampled fiber Bragg grating [J].Acta Photonica Sinica,2006,35(3): 425-427.

[4] . Wavelength-division multiplexing isolation fiber filter and light source using cascaded long-period fiber gratings[J]. Opt Lett, 1998, 23(7): 509-510.

[5] . Dependence of fringe spacing on the grating separation in a long-period fiber grating pair[J]. Appl Opt, 1999, 38(16): 3450-3459.

[6] . All-optical signal gating in cascaded long-period fiber gratings[J]. IEEE Photon Technol Lett, 2000, 12(9): 1216-1218.

[7] . Flexibly tunable multichannel filter and bandpass filter based on long-period fiber gratings[J]. Opt Express, 2004, 12(9): 1902-1907.

[8] . Tunable WDM filter with 0.8-nm channel spacing using a pair of long-period fiber gratings[J]. IEEE Photon Technol Lett, 2005, 17(4): 795-797.

[9] . Multiwavelength Raman Fiber-ring Laser based on Tunable Cascaded Long-Period Fiber Gratings[J]. IEEE Photon Technol Lett, 2003, 15(3): 383-385.

[10] . Fiber-taper seeded long-period grating pair as a highly sensitive refractive-index sensor[J]. IEEE Photon Technol Lett, 2005, 17(6): 1247-1249.

[11] . Largely tunable CFBG-based dispersion compensator with fixed center wavelength[J]. Opt Express, 2003, 11(22): 2970-2794.

[12] . Bandwidth-tunable filter and spacing-tunable comb filter based on chirp tuning of CFBGs[J]. Opt Commun, 2006, 259(2): 645-648.

董新永, 李岚, 沈平, 陈志超. 一种通道数可变的光纤光栅梳状滤波器[J]. 光子学报, 2010, 39(2): 238. DONG Xin-yong, LI Lan, SHUM Ping, CHAN Chi-chiu. Hybrid Fiber Grating-based Optical Comb Filters with Changeable Channel Numbers[J]. ACTA PHOTONICA SINICA, 2010, 39(2): 238.

本文已被 2 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!