可编程带宽波长独立可调光纤光栅滤波器

研究了一种基于线性啁啾光纤布拉格光栅(LCFBG)和热光相移技术的可编程带宽波长独立可调光纤光栅滤波器，透射峰数目、带宽、中心波长及波长间隔独立可调。由于热光效应，对LCFBG局部区域进行加热便可在加热处引入相移，使LCFBG透射禁带上产生透射峰。采用可编程的热打印头作为数字化加热单元，精确加热光纤光栅的特定位置，通过控制加热区域的数目和加热区域的间隔来分别确定透射波长的数目和透射波长的间隔；通过改变LCFBG被加热区域的宽度，实现可变带宽滤波。此可编程带宽波长独立可调光纤光栅滤波器的透射峰带宽调谐范围为0.07~1.55 nm，透射峰中心波长调谐范围为1547.44~1558.64 nm，两透射峰间距最小为0.95 nm。

Abstract

A programmable bandwidth-tunable and wavelength-variable fiber grating filter based on a linearly chirped fiber Bragg grating (LCFBG) and thermal-optical phase shift technique is proposed. The number of transmission peaks, filter bandwidth, central wavelength and wavelength spacing can be adjusted independently. Due to the thermo-optical effect, a phase shift can be induced along the LCFBG by heating a small portion of the LCFBG, then a transmission peak can be obtained within the stop band. The specific location of fiber grating is accurately heated by using a thermal printer head as a digital heating unit. The number of the transmission peaks and the wavelength spacing can be set by changing the number and the spacing of the heating points, respectively. And the peak′s bandwidth can be tuned by changing the width of the heating region. Tunable bandwidth of transmission peak between 0.07 nm and 1.55 nm, central wavelength of transmission peak ranging from 1547.16 nm to 1558.64 nm and the minimum wavelength spacing of 0.95 nm can be achieved using this filter.

参考文献

[1] Ngo N Q, Liu D, Tjin S C. Thermally switchable and discretely tunable comb filter with a linearly chirped fiber Bragg grating [J]. Opt Lett, 2005, 30(22): 2994-2996.

[2] Raffaelli C, Savi M. Dynamic flexible grid optical networks: a traffic perspective [C]. ICTON, 2012. Tu.A1.3.

[3] Sinefeld David, Marom Dan M. Flexible grid multi-line fiber ring laser with an intracavity filter using a phase LCoS modulator [C]. OFC/NFOEC Technical Digest, 2012. OW1C.6.

[4] Chen X, Xian L, Ogusu K, et al.. Phase-shift induced in a high-channel-count fiber Bragg grating and its application to multiwavelength fiber ring laser [J]. IEEE Photon Technol Lett, 2011, 23(8): 498-500.

[5] Liu D, Ngo N Q, Tjin S C. A reconfigurable multiwavelength fiber laser with switchable wavelength channels and tunable wavelength spacing [J]. Opt Commun, 2008, 281(18): 4715-4718.

[6] Li S Y, Ngo N Q, Tjin S C. Thermally tunable narrow-bandpass filter based on a linearly chirped fiber Bragg grating [J]. Opt Lett, 2004, 29(1): 29-31.

[7] Ngo N Q, Li S Y, Binh N. A phase-shifted linearly chirped fiber Bragg grating with tunable bandwidth [J]. Opt Commun, 2006, 260(2): 438-441.

[8] Sanjay Gupta, Toru Mizunami, Teruo Shimomura. Computer control of fiber Bragg grating spectral characteristics using a thermal head [J]. J Lightwave Technol, 1997, 15(10): 1925-1928.

[9] Petermann I, Helmfrid S, Gunnarsson O, et al.. Tunable and programmable optical bandpass filter [J]. J Opt A: Pure Appl Opt, 2007, 9(11): 1057-1061.

[10] 康赟. 啁啾相移光纤光栅的光谱特性分析及其应用[D]. 厦门: 厦门大学, 2008. 30-32.

Kang Yun. Investigations of Characteristics and Applications of Chirped and Phase-Shifted Fiber Bragg Gratings [D]. Xiamen: Xiamen University, 2008. 30-32.

[11] 衣红钢, 巩宪锋, 王长松. 高灵敏度光纤光栅温度传感器的研究[J]. 传感器与微系统, 2006, 25(8): 10-14.

Yi Honggang, Gong Xianfeng, Wang Changsong. Research on high-sensitivity fiber grating temperature sensors [J]. Transducer and Microsystem Technologies, 2006, 25(8): 10-14.

[12] Sandgren S, Sahlgren B, Asseh A, et al.. Characterisation of Bragg gratings in fibers with the heat-scan technique [J]. Electron Lett, 1995, 31(8): 665-666.

[13] 蔡璐璐, 吴飞, 王玉田. 相移光纤光栅的反射谱特性分析[J]. 中国激光, 2009, 36(8): 2070-2075.

Cai Lulu, Wu Fei, Wang Yutian. Analysis for the reflective spectrum characteristics of phase-shifted fiber gratings [J]. Chinese J Lasers, 2009, 36(8): 2070-2075.

[14] 陈金林, 孙军强, 夏利, 等. 双波长啁啾相移光纤光栅[J]. 光子学报, 2009, 38(7): 1776-1779.

Chen Jinlin, Sun Junqiang, Xia Li, et al.. A phase-shifted chirped fiber Bragg grating with dual-wavelength transmission [J]. Acta Photonica Sinica, 2009, 38(7): 1776-1779.

张海亮, 唐明, 谢意维, 廖恢齐, 邱拓, 付松年, 刘端, 沈平, 刘德明. 可编程带宽波长独立可调光纤光栅滤波器[J]. 光学学报, 2013, 33(7): 0706011. Zhang Hailian, Tang Ming, Xie Yiwei, Liao Huiqi, Qiu Tuo, Fu Songnian, Liu Duan, Shen Ping, Liu Deming. Programmable Bandwidth-Tunable and Wavelength-Variable Fiber Grating Filter[J]. Acta Optica Sinica, 2013, 33(7): 0706011.

可编程带宽波长独立可调光纤光栅滤波器

关于本站 Cookie 的使用提示

全站搜索

可编程带宽波长独立可调光纤光栅滤波器

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索