Subwavelength structure enabled ultra-long waveguide grating antenna

被引：19

作者：

Chen, Jiaxin ^{[1
]}

Wang, Jinzhao ^{[1
]}

Li, Jiewen ^{[1
]}

Yao, Yong ^{[1
]}

Sun, Yunxu ^{[1
]}

Tian, Jiajun ^{[1
]}

Zou, Yi ^{[2
]}

Zhao, Xiangjie ^{[3
]}

Xu, Xiaochuan ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Tunable Laser Technol, Harbin Inst Technol Campus, Shenzhen 518055, Guangdong, Peoples R China

[2] ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai 201210, Peoples R China

[3] China Acad Engn Phys, Inst Fluid Phys, Mianyang 621900, Sichuan, Peoples R China

来源：

OPTICS EXPRESS | 2021年 / 29卷 / 10期

基金：

中国国家自然科学基金;

关键词：

OPTICAL PHASED-ARRAY; HIGH DIRECTIONALITY; BEAM DIVERGENCE; BOUND-STATES; SILICON; COUPLERS; LIGHT; DESIGN; LIDAR;

D O I：

10.1364/OE.421529

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Because of the high index contrast, current silicon photonics based optical phased arrays cannot achieve small beam divergence and large field-of-view simultaneously without increasing fabrication complexity. To resolve the dilemma, we propose an ultra-long waveguide grating antenna formed by placing subwavelength segments within the evanescent field of a conventional strip waveguide. Bound state in the continuum effect is leveraged to suppress the sidewall emission. As a proof of concept, we theoretically demonstrated a millimeter-long through-etched waveguide grating antenna with a divergence angle of 0.081 degrees and a feature size compatible with current silicon photonics foundries. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：15133 / 15144

页数：12

共 58 条

[1] Monolithic optical phased-array transceiver in a standard SOI CMOS process [J].

Abediasl, Hooman ;

Hashemi, Hossein .

OPTICS EXPRESS, 2015, 23 (05) :6509-6519

[2] L-shaped fiber-chip grating couplers with high directionality and low reflectivity fabricated with deep-UV lithography [J].

Benedikovic, Daniel ;

Alonso-Ramos, Carlos ;

Perez-Galacho, Diego ;

Guerber, Sylvain ;

Vakarin, Vladyslav ;

Marcaud, Guillaume ;

Le Roux, Xavier ;

Cassan, Eric ;

Marris-Morini, Delphine ;

Cheben, Pavel ;

Boeuf, Frederic ;

Baudot, Charles ;

Vivien, Laurent .

OPTICS LETTERS, 2017, 42 (17) :3439-3442

[3] Dispersion control of silicon nanophotonic waveguides using sub-wavelength grating metamaterials in near- and mid-IR wavelengths [J].

Benedikovic, Daniel ;

Berciano, Mathias ;

Alonso-Ramos, Carlos ;

Le Roux, Xavier ;

Cassan, Eric ;

Marris-Morini, Delphine ;

Vivien, Laurent .

OPTICS EXPRESS, 2017, 25 (16) :19468-19478

[4] Subwavelength index engineered surface grating coupler with sub-decibel efficiency for 220-nm silicon-on-insulator waveguides [J].

Benedikovic, Daniel ;

Cheben, Pavel ;

Schmid, Jens H. ;

Xu, Dan-Xia ;

Lamontagne, Boris ;

Wang, Shurui ;

Lapointe, Jean ;

Halir, Robert ;

Ortega-Monux, Alejandro ;

Janz, Siegfried ;

Dado, Milan .

OPTICS EXPRESS, 2015, 23 (17) :22628-22635

[5] Subwavelength waveguide grating for mode conversion and light coupling in integrated optics [J].

Cheben, P. ;

Xu, D. -X. ;

Janz, S. ;

Densmore, A. .

OPTICS EXPRESS, 2006, 14 (11) :4695-4702

[6] Subwavelength integrated photonics [J].

Cheben, Pavel ;

Halir, Robert ;

Schmid, Jens H. ;

Atwater, Harry A. ;

Smith, David R. .

NATURE, 2018, 560 (7720) :565-572

[7] Refractive index engineering with subwavelength gratings for efficient microphotonic couplers and planar waveguide multiplexers [J].

Cheben, Pavel ;

Bock, Przemek J. ;

Schmid, Jens H. ;

Lapointe, Jean ;

Janz, Siegfried ;

Xu, Dan-Xia ;

Densmore, Adam ;

Delage, Andre ;

Lamontagne, Boris ;

Hall, Trevor J. .

OPTICS LETTERS, 2010, 35 (15) :2526-2528

[8]

Chen Jianle, 2020, 19 M JOINT VID EXPL, P1

[9] Design of narrowband Bragg spectral filters in subwavelength grating metamaterial waveguides [J].

Ctyroky, Jiri ;

Gonzalo Wanguemert-Perez, Juan ;

Kwiecien, Pavel ;

Richter, Ivan ;

Litvik, Jan ;

Schmid, Jens H. ;

Molina-Fernandez, Inigo ;

Ortega-Monux, Alejandro ;

Dado, Milan ;

Cheben, Pavel .

OPTICS EXPRESS, 2018, 26 (01) :179-194

[10] Controlling leakage losses in subwavelength grating silicon metamaterial waveguides [J].

Dario Sarmiento-Merenguel, J. ;

Ortega-Monux, Alejandro ;

Fedeli, Jean-Marc ;

Gonzalo Wanguemert-Perez, J. ;

Alonso-Ramos, Carlos ;

Duran-Valdeiglesias, Elena ;

Cheben, Pavel ;

Molina-Fernandez, Inigo ;

Halir, Robert .

OPTICS LETTERS, 2016, 41 (15) :3443-3446

← 1 2 3 4 5 6 →