Bragg反射齿型平面凹面衍射光栅性能研究

李宝; 杜炳政; 朱京平

doi:10.7498/aps.64.154211

摘要

本文基于Bragg反射光栅是一维光子晶体的一种特例结构, 提出利用一维光子晶体理论进行Bragg衍射光栅的设计并对其性能进行研究分析. 根据一维光子晶体理论, 建立了罗兰圆结构的凹面椭圆Bragg蚀刻衍射光栅, 研究了TE/TM模式下器件的分光特性以及入射角度改变对器件角色散造成的影响; 同时, 文中对比了空气介质型和金属铝线型椭圆Bragg蚀刻衍射光栅的光学性能. 研究结果表明: 选择合适的器件参数, 可以实现TE/TM模式下1.465-1.615 μm范围内波长衍射效率在95% 以上, 且空气介质型结构光栅的通道均匀性要优于金属铝线型结构光栅; 入射角在30°-60°范围内变化时, 相同入射角度下, TM模式下器件角色散大于TE模式. 基于Bragg衍射光栅设计的波分复用器是一种尺寸小、衍射效率高的新型EDG 波分复用器, 为未来密集型EDG波分复用器发展提供了一种新的设计思路.

关键词:

Abstract

Based on the fact that Bragg reflection grating(BRG) is a special one-dimensional photonic crystal, we propose to apply the one-dimensional photonic crystal band gap theory to the design of Bragg reflection grating and then to make an analysis of its optical performance. According to the above band gap theory, FDTD solution is used to build the elliptical Bragg etched diffraction grating (EDG) based on the Rowland circle. We have studied the spectral characteristics for both TE and TM modes and the angle dispersion due to the variation of the incident angle, at the same time, the optical performances in the air dielectric type Bragg grating and the Al metallic line type Bragg grating are also made to compare with each other. It turns out that by choosing appropriate parameters the diffraction efficiency can be got more than 95% within the scope of 1.465-1.615 μm in both TE and TM modes, and the air dielectric type Bragg grating structure behaves better in the uniformity throughout the whole channel than in the Al metallic line type Bragg grating structure. When the incident angle varies from 30° to 60°, the angle dispersion in TM mode is larger than that in TE mode. This is the foundation of a new type of EDG wavelength division multiplexer with advantages of small size and high diffraction efficiency. It may have the potential to promote the development of high diffraction efficiency dense wavelength division multiplexer in the future.

Keywords:

作者及机构信息

1.
西安交通大学电子物理与器件教育部重点实验室, 陕西省信息光子技术重点实验室, 西安 710049

Authors and contacts

1.
Shaanxi Key Laboratory of Information Photonic Technique Key Laboratory for Physical Electronics and Devices of the Ministry of Education School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China

Funds: Study on planar concave diffraction grating with Bragg reflector facets

参考文献

[1]	Wang W M, Liu W, Ma W D 2011 Acta Photonic. Sin. 40 1137
[2]	Shi Z M, He J J, He S L 2004 J. Opt. Soc. Am. A 21 1198
[3]	Erickson L, Lamontagne B, He J J, Delage A, Davies M, Koteles E 1997 IEEE/LEOS Summer Topical Meetings on WDM Components Technology Montreal, Canada, August 11-13, 1997 82
[4]	Sadov S Y, McGreer K A 2002 OPL Soc. Am. A 17 1590
[5]	Brouckaert J, Bogaerts W, Selvaraja S, Dumon P, Baets R, Van T D 2008 IEEE Photon. Technol. Lett. 20 309
[6]	Pottier P, Packirisamy M 2012 J. Lightw. Technol. 30 2922
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[8]	Winn J N, Fink Y, Fan S H, Chen C P, Joannopoulos J D, Michel J, Thomas E L 1998 Opt. Lett. 23 1573
[9]	Fink Y, Joshua N, Winn, Fan S H, Chen C P, Jurgen Michel, John D, Joannopoulos J D, Thomas E L 1998 Science 282 1679
[10]	Bidnyk S, Balakrishnan A, Delage A, Gao M, Krug P A, Muthukumaran P, Pearson M 2005 J. Lightw. Technol. 23 1435
[11]	Song J 2007 Ph. D. Dissertation (Zhejiang: Zhejiang University) (in Chinese) [宋军 2007 博士学位论文 (浙江: 浙江大学)]
[12]	Lu S Z, You K M, Chen L Z, Wang Y W 2011 Chin. Phys. B 20 034202
[13]	Shang W L, Yang J M, Zhao Y, Zhu T, Xiong G 2011 Acta Phys. Sin. 60 094212 (in Chinese) [尚万里, 杨家敏, 赵阳, 朱托, 熊刚 2011 60 094212]
[14]	Su J, Feng G Y, Zou Q H, Liu Z H, Qiu Y 2013 Acta Phys. Sin. 62 014201 (in Chinese) [苏娟, 冯国英, 邹其徽, 刘忠华, 邱毅 2013 62 014201]

施引文献

[1]	Wang W M, Liu W, Ma W D 2011 Acta Photonic. Sin. 40 1137
[2]	Shi Z M, He J J, He S L 2004 J. Opt. Soc. Am. A 21 1198
[3]	Erickson L, Lamontagne B, He J J, Delage A, Davies M, Koteles E 1997 IEEE/LEOS Summer Topical Meetings on WDM Components Technology Montreal, Canada, August 11-13, 1997 82
[4]	Sadov S Y, McGreer K A 2002 OPL Soc. Am. A 17 1590
[5]	Brouckaert J, Bogaerts W, Selvaraja S, Dumon P, Baets R, Van T D 2008 IEEE Photon. Technol. Lett. 20 309
[6]	Pottier P, Packirisamy M 2012 J. Lightw. Technol. 30 2922
[7]	Wu D S, Liu X, Li H F 2002 Acta Photonica Sin. 31 360 (in Chinese) [武东升, 刘旭, 李海峰 2002 光子学报 31 360]
[8]	Winn J N, Fink Y, Fan S H, Chen C P, Joannopoulos J D, Michel J, Thomas E L 1998 Opt. Lett. 23 1573
[9]	Fink Y, Joshua N, Winn, Fan S H, Chen C P, Jurgen Michel, John D, Joannopoulos J D, Thomas E L 1998 Science 282 1679
[10]	Bidnyk S, Balakrishnan A, Delage A, Gao M, Krug P A, Muthukumaran P, Pearson M 2005 J. Lightw. Technol. 23 1435
[11]	Song J 2007 Ph. D. Dissertation (Zhejiang: Zhejiang University) (in Chinese) [宋军 2007 博士学位论文 (浙江: 浙江大学)]
[12]	Lu S Z, You K M, Chen L Z, Wang Y W 2011 Chin. Phys. B 20 034202
[13]	Shang W L, Yang J M, Zhao Y, Zhu T, Xiong G 2011 Acta Phys. Sin. 60 094212 (in Chinese) [尚万里, 杨家敏, 赵阳, 朱托, 熊刚 2011 60 094212]
[14]	Su J, Feng G Y, Zou Q H, Liu Z H, Qiu Y 2013 Acta Phys. Sin. 62 014201 (in Chinese) [苏娟, 冯国英, 邹其徽, 刘忠华, 邱毅 2013 62 014201]

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