Optimization of electro-optic phase shifters for integrated optical phased arrays

机译：集成光学相控阵的电光移相器的优化

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A low-loss, high-speed optical phased array (OPA) has been designed and fabricated. Two different platforms have been utilized in combination to leverage electro-optic (EO) tuning. A lithium niobate (LiNbO_3) optical phased array was fabricated and used in conjunction with a silicon nitride (Si_3N_4) 8x8 waveguide array that condenses the output pitch and utilizes the Triplex~(TM) waveguide technology. This OPA allows for the non-mechanical beam steering (NMBS) of 1550 nm light on an edge coupled optic platform and takes advantage of the high electro-optic coefficient and high speed capability of LiNbO, for electro-optic phase tuning. This coupled OPA has an overall insertion loss of ~3.5 dB which is advantageous to silicon-on-insulator OPAs that have shown overall insertion losses of ~14 dB. To characterize and tune this device, a 3 lens imaging system was employed to produce both near- and far- field intensity patterns of the output of the OPA on a static image plane. At the image plane, a high resolution infrared camera was used to observe the resulting intensity pattern. The control software for tuning the OPA reads the intensity incident at a specified position on the detector array, and has a PWM interface to drive the electro-optic phase controls. Beam steering was accomplished using an iterative tuning algorithm.

机译：已经设计和制造了一种低损耗，高速光学相控阵（OPA）。结合使用了两种不同的平台来利用电光（EO）调整。制备了铌酸锂（LiNbO_3）光学相控阵列，并将其与氮化硅（Si_3N_4）8x8波导阵列结合使用，该阵列压缩了输出节距并利用了TriplexTM波导技术。该OPA允许在边缘耦合光学平台上进行1550 nm光的非机械光束转向（NMBS），并利用LiNbO的高电光系数和高速能力进行电光相位调整。这种耦合的OPA的整体插入损耗为〜3.5 dB，这对绝缘体上硅OPA的整体插入损耗为〜14 dB有利。为了表征和调整该设备，采用了三透镜成像系统以在静态像面上产生OPA输出的近场和远场强度模式。在图像平面上，使用高分辨率红外摄像机观察所得的强度模式。用于调整OPA的控制软件读取入射在检测器阵列上指定位置的强度，并具有PWM接口来驱动电光相位控制。光束转向是使用迭代调整算法完成的。

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来源
《Advanced optics for defense applications: UV therough lwir II》|2017年|1018105.1-1018105.10|共10页
会议地点 Anaheim(US)
作者
Dwayne D. Macik; Tyler E. Bravo; Seeley M. Pentecost; Francisco A. Espinal; Christi K. Madsen;
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Texas AM University, Department of Electrical and Computer Engineering, MS 3128, College Station, TX, 77843;

Texas AM University, Department of Electrical and Computer Engineering, MS 3128, College Station, TX, 77843;

Texas AM University, Department of Electrical and Computer Engineering, MS 3128, College Station, TX, 77843;

Texas AM University, Department of Electrical and Computer Engineering, MS 3128, College Station, TX, 77843;

Texas AM University, Department of Electrical and Computer Engineering, MS 3128, College Station, TX, 77843;

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原文格式 PDF
正文语种 eng
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关键词
Optical phased array; non-mechanical beam steering; annealed proton exchange; lithium niobate; arsenic trisulfide; NMBS; OPA;

机译：光学相控阵；非机械式光束转向；退火质子交换铌酸锂三硫化二砷; NMBS； OPA;

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专利

1. Demonstration of an optical phased array using electro-optic polymer phase shifters [J] . Hirano Yoshikuni, Motoyama Yasushi, Tanaka Katsu, Japanese journal of applied physics . 2018,第3S2期

机译：使用电光聚合物相移器演示光学相控阵
2. Single-chip integrated electro-optic polymer photonic RF phase shifter array [J] . Han J., Byoung-Joon Seo, SeongKu Kim, Journal of Lightwave Technology . 2003,第12期

机译：单芯片集成电光聚合物光子射频移相器阵列
3. Silicon-Based Optical Phased Array Using Electro-Optic $p$ - $i$ - $n [J] . Geumbong Kang, Seong-Hwan Kim, Jong-Bum You, IEEE Photonics Technology Letters . 2019,第21期

机译：基于硅的光相控阵使用电光$ P $ - $ i $ - $ n
4. Optimization of electro-optic phase shifters for integrated optical phased arrays [C] . Dwayne D. Macik, Tyler E. Bravo, Seeley M. Pentecost, Conference on advanced optics for defense applications: UV therough lwir II . 2017

机译：用于集成光相控阵的电光相移器的优化
5. Single-chip integrated electro-optic polymer RF phase shifter and optical single-sideband modulator. [D] . Han, Jeehoon. 2004

机译：单芯片集成电光聚合物射频移相器和光学单边带调制器。
6. All-plasmonic Optical Phased Array Integrated on a Thin-film Platform [O] . Yuan-Song Zeng, Shi-Wei Qu, Bao-Jie Chen, -1

机译：集成在薄膜平台上的全等离子体相控阵列
7. Demonstration of a wideband photonic phased array using integrated optical RF phase shifter based on the vector sum approach [O] . Mitchell A, Bui L, Ghorbani K, 2003

机译：使用基于矢量和方法的集成光学RF移相器演示宽带光子相控阵
8. Single-Chip Integrated Electro-Optic Polymer Photonic RF Phase Shifter Array [R] . Han, J. , Seo, B. , Kim, S. , 2003

机译：单芯片集成电光聚合物光子射频移相器阵列

Optimization of electro-optic phase shifters for integrated optical phased arrays

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