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Compact Polarization Beam Splitter Based on a 3-Waveguide Directional Coupler with Broad Bandwidth Performance
Dawei Wang;Yujie Hu;Youhong Zeng;Wei Wang;Yan Cai;Zhijuan Tu;Wencheng Yue;Qing Fang;Mingbin Yu
2019 IEEE 16th International Conference on Group IV Photonics (GFP)
Year: 2019 | Conference Paper |
Folded Silicon-Photonics Arrayed Waveguide Grating Integrated With Loop-Mirror Reflectors
Qing Fang;Xiaoling Chen;Yingxuan Zhao;Juan Hu;Hua Chen;Chao Qiu;Mingbin Yu
A 1 × 4 loop-mirror-integrated folded silicon-photonics arrayed waveguide grating (AWG) is designed and fabricated on an SOI wafer with two kinds of thickness of silicon areas. The introducing of two silicon thicknesses benefits the design of de/multiplexing devices with an optimal performance and large fabrication tolerances. Transition structures are used to connect 220-nm-thick sections with 34...Show More
A ring-mirrors-integrated silicon photonics arrayed waveguide grating
Qing Fang;Juan Hu;Zhiqun Zhang;Hua Chen;Lei Zhao;Hequn Chu;Xianbo Pan
2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)
Year: 2017 | Conference Paper |
Cited by: Papers (1)
In this letter, we demonstrated a 1×4 folded silicon photonics arrayed waveguide grating integrated with ring-mirrors at the end of arrayed waveguides on SOI platform. Each reflective ring-mirror is composed of a 1×2 MMI splitter/combiner and a bend silicon nanowire waveguide in the end of each arrayed waveguide. Compared to a normal arrayed waveguide grating, the structure of the ring-mirror-inte...Show More
Silicon photonics circuits with programmable memory functionality
Junfeng Song;Xianshu Luo;Yanzhe Tang;Qing Fang;Chao Li;Lianxi Jia;Xiaoguang Tu;Ying Huang;Haifeng Zhou;Andy Eu-Jin Lim;Tsung-Yang Liow;Guoqiang Lo
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
Year: 2017 | Conference Paper |
Summary form only given. Silicon photonics circuits are playing more and more important role in optical communication and interconnect fields [1, 2]. Many silicon CMOS technique compatible photonics integrated devices are reported [3, 4]. Most of those silicon components are based on optical waveguide. But conventional integrated optical waveguide is without memory feature. One hand, which makes u...Show More
On-chip optical sense strategy illustrated in the case of flash memory system
Junfeng Song;Xianshu Luo;Yanzhe Tang;Chao Li;Lianxi Jia;Xiaoguang Tu;Qing Fang;Ying Huang;Haifeng Zhou;Andy En-Jin Lim;Tsung-Yang Liow;Guo-Qiang Lo
2016 IEEE International Electron Devices Meeting (IEDM)
Year: 2016 | Conference Paper |
Cited by: Papers (1)
We proposed and demonstrated a novel scheme for simultaneous optical sense electric memory cell states aiming to enhance the data-reading speed showing significant improvement. For the traditional electrical read-out method, it is impossible to simultaneously sense the information from more than two memory cells on the same bit-line (BL). However, with photonics, different wavelengths do not inter...Show More
Low Loss Fiber-to-Waveguide Converter With a 3-D Functional Taper for Silicon Photonics
Qing Fang;Junfeng Song;Xianshu Luo;Xiaoguang Tu;Lianxi Jia;Mingbin Yu;Guoqiang Lo
IEEE Photonics Technology Letters
Cited by: Papers (49)
We demonstrate a low-loss and broad-bandwidth fiber-to-waveguide converter with a 3-D functional SiO2 taper for silicon photonics. The converter is composed of a cantilevered SiO2 waveguide and Si nano-tapers. In order to reduce the loss from the cleaved fiber, a 3-D functional SiO2 taper is designed to compress the size of optical mode field. Using cleaved optical fibers with a mode field diamete...Show More
3D Silicon Photonics Packaging Based on TSV Interposer for High Density On-Board Optics Module
Yan Yang;Mingbin Yu;Qing Fang;Junfeng Song;Xiaoguang Tu;Patrick Guo-Qiang Lo;Rusli
2016 IEEE 66th Electronic Components and Technology Conference (ECTC)
Year: 2016 | Conference Paper |
Cited by: Papers (13)
A 3D silicon photonics packaging architecture based on a Cu-metallized Si-photonics through-silicon-via (TSV) interposer has been designed and experimentally demonstrated, which achieves flexible and compact electro-optical integration of different functionalities for high density on-board optics module. 3D photonics architecture for on-package integration overcomes the difficulties in sophisticat...Show More
Germanium-on-silicon photo-detectors based on tiny micro-disk resonators
Haifeng Zhou;Tsungyang Liow;Xiaoguang Tu;Eujin Lim;Chao Li;Lianxi Jia;Ying Huang;Lianwee Luo;Xianshu Luo;Junfeng Song;Qing Fang;Mingbin Yu;Guoqiang Lo
2016 Optical Fiber Communications Conference and Exhibition (OFC)
Year: 2016 | Conference Paper |
Modeling and fabrication of traveling-wave electrode (TWE) of Si optical modulator via Cu-BEOL
Yan Yang;Qing Fang;Mingbin Yu;Xiaoguang Tu;Junfeng Song;Rusli;Guo-Qiang Lo
2015 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC)
Year: 2015 | Conference Paper |
CMOS-compatible silicon photonics technology is becoming a promising candidate to realize very large-scale complex photonics-CMOS integration system. For the purpose of CMOS-compatible complete-Cu integration, a traveling-wave electrode (TWE) of a silicon optical modulator via Cu-based back-end-of-line (BEOL) process is demonstrated in this work. A latticed Cu surface pattern is designed for the r...Show More
Thermo-Optically Tunable Silicon AWG With Above 600 GHz Channel Tunability
Yan Yang;Xiaonan Hu;Junfeng Song;Qing Fang;Mingbin Yu;Xiaoguang Tu;Guo-Qiang Lo;Rusli
With the ever-increasing demand for small channel spacing in the dense wavelength division multiplexing technology, and the wavelength shift arising from the fabrication dimensional sensitivity of the silicon optical communication devices, wavelength tuning methods for silicon multiplexer/demultiplexer are therefore of great interest. Thermo-optically tunable silicon arrayed waveguide grating (AWG...Show More
High-Efficiency Biwavelength Polarization Splitter-Rotator on the SOI Platform
IEEE Photonics Technology Letters
Cited by: Papers (21)
We present the design of a highly efficient polarization splitter-rotator that operates at both 1310- and 1550-nm wavelength bands in a 220-nm silicon-on-insulator platform. The proposed polarization splitter-rotator has a simulated insertion loss of -0.9 dB at 1310 nm and -1 dB at 1550 nm. This is the first theoretical demonstration of a biwavelength polarization splitter-rotator. This letter is ...Show More
50-Gb/s silicon Mach-Zehnder interferometer-based optical modulator with only 1.3 Vpp driving voltages
Xiaoguang Tu;Tsung-Yang Liow;Junfeng Song;Xianshu Luo;Lian-Xi Jia;Qing Fang;Mingbin Yu;Guo-Qiang Lo
2014 IEEE 16th Electronics Packaging Technology Conference (EPTC)
Year: 2014 | Conference Paper |
Cited by: Papers (1)
Path to silicon photonics commercialization: 25 Gb/s platform development in a CMOS manufacturing foundry line
Andy Eu-Jin Lim;Tsung-Yang Liow;Junfeng Song;Chao Li;Qing Fang;Xiaoguang Tu;Ning Duan;Kok Kiong Chen;Roger Poh Cher Tern;Chuan Peng;Bong Woong Mun;Mohd Nurul Islam;Jae Soo Park;Chivukula Subbu;Guo-Qiang Lo
Path to silicon photonics commercialization: 25 Gb/s platform development in a CMOS manufacturing foundry line
Andy Eu-Jin Lim;Tsung-Yang Liow;Junfeng Song;Chao Li;Qing Fang;Xiaoguang Tu;Ning Duan;Kok Kiong Chen;Roger Poh Cher Tern;Chuan Peng;Bong Woong Mun;Mohd Nurul Islam;Jae Soo Park;Chivukula Subbu;Guo-Qiang Lo
Year: 2014 | Conference Paper |
First demonstration of silicon-based parallel-fed travelling-wave photodetector array (TWPDA)
Xianshu Luo;Junfeng Song;Qing Fang;Xiaoguang Tu;Lianxi Jia;Tsung-Yang Liow;Mingbin Yu;Guo-Qiang Lo
OFC 2014
Year: 2014 | Conference Paper |
We demonstrate the first silicon-based parallel-fed travelling-wave photodetector array (TWPDA). Impedance-matched travelling-wave electrode is designed considering periodic loading effect. The demonstrated up to 4-channel TWPDAs show >10GHz 3-dB bandwidths and ∼0.75A/W responsivity using 30µm-length PDs.Show More
High-Efficiency Low-Crosstalk 1310-nm Polarization Splitter and Rotator
Hang Guan;Ari Novack;Matthew Streshinsky;Ruizhi Shi;Yang Liu;Qing Fang;Andy Eu-Jin Lim;Guo-Qiang Lo;Tom Baehr-Jones;Michael Hochberg
IEEE Photonics Technology Letters
Cited by: Papers (26)
We demonstrate the first example of a polarization splitter and rotator (PSR) at 1310 nm built on a silicon-on-insulator platform using 248-nm deep-ultraviolet lithography. The PSR is constructed with a directional coupler, a bilevel taper-based TM0-to-TE1 mode converter, and an asymmetric Mach-Zehnder-based TE1-to-TE0 mode converter. A worst-case TM0-to-TE0 mode-conversion loss of 2 dB, with pola...Show More
Review of Silicon Photonics Foundry Efforts
Andy Eu-Jin Lim;Junfeng Song;Qing Fang;Chao Li;Xiaoguang Tu;Ning Duan;Kok Kiong Chen;Roger Poh-Cher Tern;Tsung-Yang Liow
Silicon photonics have progressed to a point where the next step for commercialization depends on the accessibility of manufacturing foundries. The implementation of a fabless foundry model using standardized process technology platforms is crucial for that to occur. Research and development (R&D) foundries are beginning to play bigger roles in transforming silicon photonics into a mature technolo...Show More
Through-Si-via (TSV) Keep-Out-Zone (KOZ) in SOI Photonics Interposer: A Study of the Impact of TSV-Induced Stress on Si Ring Resonators
Yan Yang;Mingbin Yu;Rusli;Qing Fang;Junfeng Song;Liang Ding;Guo-Qiang Lo
Si photonic devices are sensitive to the change in refractive index on the Si-on-insulator (SOI) platform. One of the critical limitations in the compact 3D photonic integration circuit is the through-Si-via (TSV)-induced stress, which affects the performances of Si photonic devices integrated in interposer. We build a model to analyze and simulate the wavelength shift of the ring resonator caused...Show More
Compact Optical Polarization Rotators Based on an Asymmetric Silicon Waveguide
Lianxi Jia;Tsung-Yang Liow;Junfeng Song;Xianshu Luo;Ning Duan;Sing Chee Koh;Qing Fang;Mingbin Yu;Guoqiang Lo
IEEE Photonics Technology Letters
Cited by: Papers (7)
We design and compare two kinds of polarization rotators based on a partially etched waveguide: 1) the quadrate pattern and 2) the tapered pattern in the partially etched area. The devices are fabricated on a commercially available 200-mm silicon on insulator wafer with a 340 nm-thick top silicon and a 2 μm-thick buried dioxide. The tapered design realizes a polarization extinction ratio of ~ 13.3...Show More
Design and Optimization of 2D Laser Source Module for Compact Projector
Qingshan Kong;Youwan Tong;Hui Dong;Qing Fang;Yan Zhou;Yuliang Liu
Journal of Display Technology
Cited by: Papers (2)
In order to make projector compact and efficient, we propose that the 2D laser source module is consisted of VCSEL array and micro-lens array. It describes packaging structure design of VCSEL array and thermal resistance calculation. A thermal 3D analysis of 3 ×3 array based on the finite-element method (FEM) is presented. The analysis shows that the maximum internal temperature of a VCSEL array r...Show More
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