光子学报, 2014, 43 (10): 1006004, 网络出版: 2014-11-06  

阶梯分段准相位匹配结构的平坦宽带波长转换

Flattop Broadband Wavelength Conversion Based on Step-segmented Quasi-phase Matched Gratings
作者单位
华北电力大学 电子与通信工程系,河北 保定 071003
摘要
利用龙格-库塔法分析了阶梯分段准相位匹配结构对基于差频效应的波长转换器的转换带宽、转换效率及平坦性的影响.当晶体长度不变时,增加阶梯段数,设计合理的起始段极化周期及合理的阶梯变化量,可以同时获得高平坦性、大转换带宽和高转换效率的波长转换.分析了结构参数对波长转换特性的影响.对于3 cm长的晶体,在保证平坦度低于0.2 dB的前提下,得到166 nm的转换带宽和-0.55 dB的最大转换效率.对比分析了阶梯分段结构的波长转换器与正弦啁啾光学超晶格和分段光栅结构的波长转换器的特性,结果表明阶梯分段结构与正弦啁啾光学超晶格相比在转换效率、带宽和平坦度方面都占优势;与分段光栅结构相比,转换带宽稍小,但转换效率和平坦度都更大.
Abstract
Flattop broadband wavelength conversions based on difference frequency generation were fulfilled by utilizing step-segmented quasi-phase matched gratings.For the same waveguide length,high conversion efficiency,flat response and broad signal bandwidth can be obtained simultaneously by adding the segment number of quasi-phase matched grating and optimizing the poling period of the first segment and the period shifts between adjacent sections.Analysis of the structure parameters on conversion efficiency,signal bandwidth and response flatness is performed as well.The conversion bandwidth in a 3-cm-long waveguide reaches 166 nm,which is over the whole conventional band and long-wavelength band,meanwhile the maximum efficiency is -0.55 dB and the peak-to-peak ripples less than 0.2 dB.In addition,the comparison among step-segmented gratings,sinusoidally chirped optical superlattices and segmented gratings is carried out,the step-segmented gratings shows higher conversion efficiency and flatter response than the other two gratings,and has much broader bandwidth than sinusoidally chirped optical superlattices.
参考文献

[1] YU Song,GU Wan-yi,A tunable wavelength conversion and wavelength add/drop scheme based on cascaded second-order nonlinearity with double-pass configuration[J].IEEE Journal of Quantum Electronics,2005,41(7):1007-1012.

[2] LIU Tao,QI Yu-lin,CHE Lin-lin,et al.Flat broadband wavelength conversion based on cascaded second-harmonic generation and difference frequency generation in segmented quasi-phase matched gratings[J].Journal of Modern Optics,2012,59(7-8):650-657.

[3] LIU Tao,LI Bao-gang,Broadband wavelength converter based on segmented quasi-phase matched grating[C].Society of Photo-Optical Instrumentation Engineers,2010,7544.

[4] XU C Q,OKAYAMA H,KAWAHARA M,1.5μm band efficient broadband wavelength conversion by difference frequency generation in a periodically domain-inverted LiNbO3 channel waveguide[J].Applied Physics Letters,1993,63:3559-3561.

[5] CHOU M H,BRENNER I,PARAMESWARAN K R,et al.Stabiliti and bandwidth enhancement of difference frequency generation (DFG)-based wavelength conversion by pump detuning[J].Electronics Letters,1999,35(12):978-980.

[6] KISHIMOTO T,NAKAMURA K,YAEGASHI H,et al.Chirped periodically poled LiNbO3 wavelength converter with apodization structure[J].Photonics Technology Letters,2012,24(4):228-230.

[7] CHOU M H,BRENER I,FEJER M M,et al.1.55-μm -band wavelength conversion based on cascaded second-order nonlinearity in LiNbO3 waveguides[J].Photonics Technology Letters,1999,11(6):653-655.

[8] CHEN B,XU C Q,Analysis of novel cascaded χ(2)(SFG+DFG) wavelength conversions in quasi-phase-matched waveguides[J].IEEE Journal of Quantum Electronics,2004,40(4):256-261.

[9] MEENU A,AMIRHOSSEIN T,KRISHNAMOORTHY P,et al.Tunable all-optical wavelength broadcasting in a PPLN with multiple QPM peaks[J].Optics Express,2012,20(24):27425-27433.

[10] CHEN Yun-lin,LIU Gang,ZHENG Yan-qing,Broadband-signal wavelength converter with high damage resistance[J].Optics Letters,2009,34(16):2480-2482.

[11] WANG J,SUN J Q,LUO C H,et al.Experimental demonstration of wavelength conversion between ps-pulses based on cascaded sum- and difference frequency generation (SFG+DFG) in LiNbO3 waveguides[J].Optics Express,2005,13(19):7405-7414.

[12] TEHRANCHI A,KASHYAP R.Efficient flattop ultra-wideband wavelength converters based on double-pass cascaded sum and difference frequency generation using engineered chirped gratings[J].Optics Express,2011,19(23):22528-22534.

[13] TEHRANCHI A,KASHYAP R,Flattop efficient cascaded χ(2)(SFG+DFG)- based wideband wavelength converters using step-chirped gratings[J].IEEE Journal of Quantum Electronics,2011,99:1-9.

[14] GAO Shi-ming,YANG Chang-xi,JIN Guo-fan,Conventional-band and long-wavelength-band efficient wavelength conversion by difference-frequency generation in sinusoidally chirped optical superlattice waveguides[J].Optics Communication,2004,239:333-338.

[15] LIU X,ZHANG H,GUO Y,et al.Optimal design and applications for quasi-phase-matching three-wave mixing[J].IEEE Journal of Quantum Electronics,2002,38(9):1225-1233.

[16] CHOU M H,ARBORE M A,FEJER M M,Adiabatically tapered periodic segmentation of channel waveguides for mode-size transformation and fundamental mode excitation[J].Optics Letters,1996,21(11):794-796.

[17] WANG Jian,FU Hong-yan,GENG Dong-yu,et al.Single-PPLN-assisted wavelength-/time-selective switching/ dropping/ swapping for 100-GHz-spaced WDM signals[J].Optics Express,2013,21(3):3756-3774.

[18] HUANG Hao,YANG Jeng-yuan,WU Xiao-xia,et al.Simultaneous subchannel data updating for multiple channels of 16-quadrature amplitude modulation signals using a single periodically poled lithium niobate waveguide[J].Optics Letters,2012,37(21):4365-4367.

[19] WANG J,SUN J Q,ZHANG X L,et al.All-optical format conversions using periodically poled lithium niobate waveguides[J].IEEE Journal of Quantum Electronics,2009,45(2):195-205.

[20] DORMAND J R,PRINCE P J,A family of embedded Runge-Kutta formulae[J].Journal of Computational and Applied Mathematics,1980,6:19-26.

[21] 王世铭.周期极化铌酸锂中通信波段纠缠双光子的波长管理方法[J]光子学报,2007,36(5):820-824.

    GAO Shi-ming.Wavelength management method of telecommunication-band polarization-entangled twin photons in periodically poled lithium niobate crystals[J].Acta Photonica Sinica,2007,36(5):820-824.

[22] 王健,孙军强,孙琪真,单到单和单到双信道皮秒脉冲全光波长转换的实验研究[J].光子学报,2007,36(6):986-990.

    WANG Jian,SUN Jun-qiang,SUN Qi-zhen,Experimental investigation of single-to-single and single-to-doual channel wavelength conversion between picosecond pulses[J].Acta Photonica Sinica,2007,36(6):986-990.

[23] 李万杰,朱畅华,赵楠,等.基于和频与差频级联的全光单光子波长变换[J].光子学报,2013,42(7):763-767.

    LI Wan-jie,ZHU Chang-hua,ZHAO Nan,et al.All-optical single-photon wavelength conversion based on cascaded sum-frequency generation and difference-frequency generation[J].Acta Photonica Sinica,2013,42(7):763-767.

刘涛, 崔洁, 张珂, 卢春林, 朱凯. 阶梯分段准相位匹配结构的平坦宽带波长转换[J]. 光子学报, 2014, 43(10): 1006004. LIU Tao, CUI Jie, ZHANG Ke, LU Chun-lin, ZHU Kai. Flattop Broadband Wavelength Conversion Based on Step-segmented Quasi-phase Matched Gratings[J]. ACTA PHOTONICA SINICA, 2014, 43(10): 1006004.

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