High-speed 4x4 optoelectronic switch with on-chip optical signal distribution

1998 ◽  
Author(s):  
Carlos Almeida ◽  
Francois L. Gouin ◽  
Lucie Robitaille ◽  
Claire L. Callender ◽  
Julian P. Noad
Keyword(s):  
High Speed ◽  
Optical Signal ◽  
Signal Distribution ◽  
On Chip ◽  
Optoelectronic Switch

Integrated Photonic Circuits in Gallium Nitride and Aluminum Nitride

2014 ◽  
Vol 23 (01n02) ◽  
pp. 1450001 ◽  
Author(s):  
Chi Xiong ◽  
Wolfram Pernice ◽  
Carsten Schuck ◽  
Hong X. Tang
Keyword(s):  
High Speed ◽  
Optical Signal ◽  
Silicon Substrates ◽  
Material System ◽  
Group Iii ◽  
Electro Optic ◽  
New Material ◽  
Nanophotonic Circuits ◽  
Group Iii Nitride ◽  
On Chip

Integrated optics is a promising optical platform both for its enabling role in optical interconnects and applications in on-chip optical signal processing. In this paper, we discuss the use of group III-nitride (GaN, AlN) as a new material system for integrated photonics compatible with silicon substrates. Exploiting their inherent second-order nonlinearity we demonstrate and second, third harmonic generation in GaN nanophotonic circuits and high-speed electro-optic modulation in AlN nanophotonic circuits.

scholarly journals On-chip silicon photonic controllable 2 × 2 four-mode waveguide switch

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Cao Dung Truong ◽  
Duy Nguyen Thi Hang ◽  
Hengky Chandrahalim ◽  
Minh Tuan Trinh
Keyword(s):  
High Speed ◽  
Optical Switch ◽  
Optical Signal ◽  
Phase Shifters ◽  
Silicon On Insulator ◽  
Mode Division Multiplexing ◽  
Large Width ◽  
On Chip ◽  
Simultaneous Switching ◽  
20 Nm

AbstractMultimode optical switch is a key component of mode division multiplexing in modern high-speed optical signal processing. In this paper, we introduce for the first time a novel 2 × 2 multimode switch design and demonstrate in the proof-of-concept. The device composes of four Y-multijunctions and 2 × 2 multimode interference coupler using silicon-on-insulator material with four controllable phase shifters. The shifters operate using thermo-optic effects utilizing Ti heaters enabling simultaneous switching of the optical signal between the output ports on four quasi-transverse electric modes with the electric power consumption is in order of 22.5 mW and the switching time is 5.4 µs. The multimode switch exhibits a low insertion loss and a low crosstalk below − 3 dB and − 19 dB, respectively, in 50 nm bandwidth in the third telecom window from 1525 to 1575 nm. With a compact footprint of 10 µm × 960 µm, this device exhibits a relatively large width tolerance of ± 20 nm and a height tolerance of ± 10 nm. Furthermore, the conceptual principle of the proposed multimode switch can be reconfigurable and scalable in multifunctional on-chip mode-division multiplexing optical interconnects.

scholarly journals On-chip optical spatial-domain integrator based on Fourier optics and metasurface

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Chao Chen ◽  
Wei Qi ◽  
Yu Yu ◽  
Xinliang Zhang
Keyword(s):  
High Speed ◽  
Optical Computing ◽  
Optical Signal ◽  
Spatial Domain ◽  
Silicon On Insulator ◽  
Fourier Optics ◽  
Similarity Coefficients ◽  
Ultra Low Power ◽  
Ultra High Speed ◽  
On Chip

Abstract Analog optical computing has been an innovation and research interest in last several years, thanks to the ultra-high speed (potential for real-time processing), ultra-low power consumption and capability of parallel processing. Although great efforts have been made recently, no on-chip optical spatial-domain integrator has been experimentally demonstrated, to the best of our knowledge. Based on Fourier optics and metasurface, we design and fabricate an on-chip optical integrator using silicon-on-insulator (SOI) platform. The proposed integrator is able to integrate the electric field in spatial domain. As a proof-of-concept demonstration, a representative optical signal is well integrated to the desired distribution. Compared with theoretical expectation, the similarity coefficients of the simulated and experimental results are 83 and 78%, respectively. The proposed scheme has potential of performing more complex and ultra-high-speed computing for artificial intelligence.

scholarly journals On-chip high-speed coherent optical signal receiver based on photonic spin-Hall effect

2020 ◽  
Author(s):  
Ting Lei ◽  
Changyu Zhou ◽  
Dawei Wang ◽  
Zhenwei Xie ◽  
Boyuan Cai ◽  
...  
Keyword(s):  
Optical Communication ◽  
Communication Systems ◽  
High Speed ◽  
Forward Error Correction ◽  
Polarized Light ◽  
Optical Signal ◽  
Phase Detection ◽  
Phase Information ◽  
Long Distance ◽  
On Chip

Abstract The use of coherent optical signal processing in long-distance optical communication systems has dramatically increased data capacity enabling encoding of multiple-bit information in the amplitude and phase of a light beam. Direct detection of phase information of a high-speed modulated light remains challenging and requires an external, local oscillator for referencing, which is expensive for short-reach optical communications, for example, in datacenters. The availability of less complex integrated photonics devices for coherent signal detection would alleviate this bottleneck. On the other hand, phase information of coherent, orthogonally polarized light beams can be extracted from their polarization states and it is, therefore, possible to achieve phase measurements via fast polarization detection. Here we demonstrate an on-chip, high-speed coherent optical signal receiver enabled by spin-orbit coupling in Si-photonics circuitry. In a coherent communication experiment with up to 16 Gbaud/s rate, the high-speed quadrature phase-shift keying signals detected by a Si nanodisk based polarisation measurements at multiple wavelength in the C-band were recovered with a bit error rate below the forward error correction threshold. The proposed on-chip nanodisk coherent receiver shows promise in high-speed coherent optical communication applications where phase detection is required at low cost and small footprint.

Monolithic integration of metal-semiconductor-metal (MSM) photodetectors and optical waveguides: The use of polyimide waveguides for optical signal distribution

1996 ◽  
Vol 74 (S1) ◽  
pp. 43-46
Author(s):  
Lucie Robitaille ◽  
Claire L. Callender ◽  
Julian P. Noad
Keyword(s):  
Optical Properties ◽  
Optical Waveguides ◽  
Optical Signal ◽  
Monolithic Integration ◽  
Signal Distribution ◽  
Metal Semiconductor Metal ◽  
On Chip ◽  
Msm Photodetectors

Straight and curved polyimide waveguides have been fabricated for on-chip optical signal distribution. The optical properties of the structures at 633 and 830 nm are presented. The potential of polyimide waveguides for monolithic integration with GaAs MSM photodetectors is discussed.

Fabrication And Characterization Of Polyimide Waveguides For Optical Interconnection

1995 ◽  
Vol 413 ◽  
Author(s):  
L. Robitaille ◽  
C. L. Callender ◽  
J. P. Noad
Keyword(s):  
Integrated Circuits ◽  
Optical Signal ◽  
Radius Of Curvature ◽  
Optical Interconnection ◽  
Low Loss ◽  
Signal Distribution ◽  
Optoelectronic Integrated Circuits ◽  
Fabrication And Characterization ◽  
On Chip

ABSTRACTThis paper reports the fabrication and characterization of polyimide branching waveguides for on-chip optical signal distribution in GaAs-based optoelectronic integrated circuits (OEICs). Low-loss polyimide s-bends and splitters with good splitting ratios and angles considerably larger than similar structures made from inorganic (e.g. LiNbO3) and semiconductor (e.g. GaAs, InP) materials, have been successfully fabricated and tested. The effects of the radius of curvature, splitter angle and cladding materials on the optical losses are discussed.

Measurement of High Speed Polarization Change of Optical Signal through an OPGW Caused by Serge Current

2016 ◽  
Vol 136 (7) ◽  
pp. 887-892
Author(s):  
Ikuo Yamashita ◽  
Shun Morimura ◽  
Hitoshi Murai ◽  
Osamu Ogawa ◽  
Masahiro Kurono
Keyword(s):  
High Speed ◽  
Optical Signal ◽  
Polarization Change

scholarly journals Ultracompact and low-power-consumption silicon thermo-optic switch for high-speed data

Nanophotonics ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 937-945
Author(s):  
Ruihuan Zhang ◽  
Yu He ◽  
Yong Zhang ◽  
Shaohua An ◽  
Qingming Zhu ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
High Speed ◽  
High Performance ◽  
Pulse Amplitude ◽  
Telecommunication Networks ◽  
Low Power Consumption ◽  
Power Efficient ◽  
High Speed Data ◽  
On Chip

AbstractUltracompact and low-power-consumption optical switches are desired for high-performance telecommunication networks and data centers. Here, we demonstrate an on-chip power-efficient 2 × 2 thermo-optic switch unit by using a suspended photonic crystal nanobeam structure. A submilliwatt switching power of 0.15 mW is obtained with a tuning efficiency of 7.71 nm/mW in a compact footprint of 60 μm × 16 μm. The bandwidth of the switch is properly designed for a four-level pulse amplitude modulation signal with a 124 Gb/s raw data rate. To the best of our knowledge, the proposed switch is the most power-efficient resonator-based thermo-optic switch unit with the highest tuning efficiency and data ever reported.

An all optical photonic crystal half adder suitable for optical processing applications

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hamed Azhdari ◽  
Sahel Javahernia
Keyword(s):  
Photonic Crystal ◽  
Optical Waveguides ◽  
High Speed ◽  
Building Blocks ◽  
Optical Signal ◽  
Ring Resonators ◽  
Optical Processing ◽  
Nonlinear Photonic Crystal ◽  
Half Adder ◽  
All Optical

Abstract Increasing the speed of operation in all optical signal processing is very important. For reaching this goal one needs high speed optical devices. Optical half adders are one of the important building blocks required in optical processing. In this paper an optical half adder was proposed by combining nonlinear photonic crystal ring resonators with optical waveguides. Finite difference time domain method wase used for simulating the final structure. The simulation results confirmed that the rise time for the proposed structure is about 1 ps.

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