Subwavelength grating couplers for efficient light coupling into silicon nanomembrane based photonic devices

2013 ◽  
Author(s):  
Harish Subbaraman ◽  
Xiaochuan Xu ◽  
John Covey ◽  
Ray T. Chen
Keyword(s):  
Photonic Devices ◽  
Grating Couplers ◽  
Subwavelength Grating ◽  
Silicon Nanomembrane ◽  
Light Coupling

Stamp printing of silicon-nanomembrane-based photonic devices onto flexible substrates with a suspended configuration

2012 ◽  
Vol 37 (6) ◽  
pp. 1020 ◽  
Author(s):  
Xiaochuan Xu ◽  
Harish Subbaraman ◽  
Amir Hosseini ◽  
Che-Yun Lin ◽  
David Kwong ◽  
...  
Keyword(s):  
Photonic Devices ◽  
Flexible Substrates ◽  
Silicon Nanomembrane

scholarly journals Inverse design of grating couplers using the policy gradient method from reinforcement learning

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sean Hooten ◽  
Raymond G. Beausoleil ◽  
Thomas Van Vaerenbergh
Keyword(s):  
Neural Network ◽  
Reinforcement Learning ◽  
Gradient Method ◽  
Photonic Devices ◽  
Inverse Design ◽  
Grating Couplers ◽  
Electromagnetic Devices ◽  
Policy Gradient ◽  
Gradient Based ◽  
Local Gradient

Abstract We present a proof-of-concept technique for the inverse design of electromagnetic devices motivated by the policy gradient method in reinforcement learning, named PHORCED (PHotonic Optimization using REINFORCE Criteria for Enhanced Design). This technique uses a probabilistic generative neural network interfaced with an electromagnetic solver to assist in the design of photonic devices, such as grating couplers. We show that PHORCED obtains better performing grating coupler designs than local gradient-based inverse design via the adjoint method, while potentially providing faster convergence over competing state-of-the-art generative methods. As a further example of the benefits of this method, we implement transfer learning with PHORCED, demonstrating that a neural network trained to optimize 8° grating couplers can then be re-trained on grating couplers with alternate scattering angles while requiring >10× fewer simulations than control cases.

Large area transferred silicon nanomembrane photonic devices on unconventional substrates

2013 ◽  
Author(s):  
Xiaochuan Xu ◽  
Harish Subbaraman ◽  
Amir Hosseini ◽  
David Kwong ◽  
Ray T. Chen
Keyword(s):  
Photonic Devices ◽  
Large Area ◽  
Silicon Nanomembrane

Large-aperture subwavelength grating couplers

2016 ◽  
Vol 55 (11) ◽  
pp. 2960 ◽  
Author(s):  
Fan Qi ◽  
Qingyan Ma ◽  
Yufei Wang ◽  
Wanhua Zheng
Keyword(s):  
Grating Couplers ◽  
Subwavelength Grating ◽  
Large Aperture

scholarly journals Subwavelength-Grating Metamaterial Structures for Silicon Photonic Devices

2018 ◽  
Vol 106 (12) ◽  
pp. 2144-2157 ◽  
Author(s):  
Robert Halir ◽  
Alejandro Ortega-Monux ◽  
Daniel Benedikovic ◽  
Goran Z. Mashanovich ◽  
J. Gonzalo Wanguemert-Perez ◽  
...  
Keyword(s):  
Photonic Devices ◽  
Subwavelength Grating ◽  
Silicon Photonic

scholarly journals Efficient light coupling into in-plane semiconductor nanomembrane photonic devices utilizing a sub-wavelength grating coupler

2012 ◽  
Vol 20 (18) ◽  
pp. 20659 ◽  
Author(s):  
Harish Subbaraman ◽  
Xiaochuan Xu ◽  
John Covey ◽  
Ray T. Chen
Keyword(s):  
Photonic Devices ◽  
Grating Coupler ◽  
Light Coupling ◽  
Sub Wavelength

Large Area Silicon Nanomembrane Photonic Devices on Unconventional Substrates

2013 ◽  
Vol 25 (16) ◽  
pp. 1601-1604 ◽  
Author(s):  
Xiaochuan Xu ◽  
Harish Subbaraman ◽  
David Kwong ◽  
Amir Hosseini ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Photonic Devices ◽  
Large Area ◽  
Silicon Nanomembrane

Transfer and characterization of silicon nanomembrane-based photonic devices on flexible polyimide substrate

2011 ◽  
Author(s):  
Xiaochuan Xu ◽  
Harish Subbaraman ◽  
Daniel Pham ◽  
Amir Hosseini ◽  
Xiaohui Lin ◽  
...  
Keyword(s):  
Photonic Devices ◽  
Polyimide Substrate ◽  
Silicon Nanomembrane

scholarly journals State-of-the-Art and Perspectives on Silicon Waveguide Crossings: A Review

Micromachines ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 326 ◽  
Author(s):  
Sailong Wu ◽  
Xin Mu ◽  
Lirong Cheng ◽  
Simei Mao ◽  
H.Y. Fu
Keyword(s):  
Integrated Circuits ◽  
State Of The Art ◽  
Design Method ◽  
Photonic Devices ◽  
Research Directions ◽  
Subwavelength Grating ◽  
Silicon Waveguide ◽  
Mode Division Multiplexing ◽  
Silicon Photonic ◽  
Inverse Design Method

In the past few decades, silicon photonics has witnessed a ramp-up of investment in both research and industry. As a basic building block, silicon waveguide crossing is inevitable for dense silicon photonic integrated circuits and efficient crossing designs will greatly improve the performance of photonic devices with multiple crossings. In this paper, we focus on the state-of-the-art and perspectives on silicon waveguide crossings. It reviews several classical structures in silicon waveguide crossing design, such as shaped taper, multimode interference, subwavelength grating, holey subwavelength grating and vertical directional coupler by forward or inverse design method. In addition, we introduce some emerging research directions in crossing design including polarization-division-multiplexing and mode-division-multiplexing technologies.

Sign in / Sign up

Export Citation Format

Share Document