Waveguide coupling efficiency in thin-film homogeneous lenses

1990 ◽  
Vol 137 (4) ◽  
pp. 255 ◽  
Author(s):  
P. Jiang ◽  
W. Zhang ◽  
P.J.R. Laybourn
Keyword(s):  
Thin Film ◽  
Coupling Efficiency ◽  
Waveguide Coupling

scholarly journals Coherent characterisation of a single molecule in a photonic black box

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Sebastien Boissier ◽  
Ross C. Schofield ◽  
Lin Jin ◽  
Anna Ovvyan ◽  
Salahuddin Nur ◽  
...  
Keyword(s):  
Single Molecule ◽  
Coupling Efficiency ◽  
Black Box ◽  
Measured Spectrum ◽  
Photonic Structure ◽  
Quantum Emitter ◽  
Precise Knowledge ◽  
Transmission And Reflection Spectra ◽  
Waveguide Coupling ◽  
Transmission And Reflection

AbstractExtinction spectroscopy is a powerful tool for demonstrating the coupling of a single quantum emitter to a photonic structure. However, it can be challenging in all but the simplest of geometries to deduce an accurate value of the coupling efficiency from the measured spectrum. Here we develop a theoretical framework to deduce the coupling efficiency from the measured transmission and reflection spectra without precise knowledge of the photonic environment. We then consider the case of a waveguide interrupted by a transverse cut in which an emitter is placed. We apply that theory to a silicon nitride waveguide interrupted by a gap filled with anthracene that is doped with dibenzoterrylene molecules. We describe the fabrication of these devices, and experimentally characterise the waveguide coupling of a single molecule in the gap.

On the role of evanescent modes and group index tapering in slow light photonic crystal waveguide coupling efficiency

2011 ◽  
Vol 98 (3) ◽  
pp. 031107 ◽  
Author(s):  
Amir Hosseini ◽  
Xiaochuan Xu ◽  
David N. Kwong ◽  
Harish Subbaraman ◽  
Wei Jiang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Slow Light ◽  
Coupling Efficiency ◽  
Group Index ◽  
Photonic Crystal Waveguide ◽  
Waveguide Coupling

Improving fiber to waveguide coupling efficiency by use of a highly germanium-doped thermally expanded core fiber

2012 ◽  
Vol 44 (3) ◽  
pp. 679-682 ◽  
Author(s):  
Huaixi Chen ◽  
Yishen Qiu ◽  
Gaoming Li ◽  
Hao Zhang ◽  
Qun Chen
Keyword(s):  
Coupling Efficiency ◽  
Core Fiber ◽  
Waveguide Coupling

scholarly journals Improving coupling efficiency of fiber-waveguide coupling with a double-tip coupler

2008 ◽  
Vol 16 (25) ◽  
pp. 20803 ◽  
Author(s):  
H. Tao ◽  
Junfeng Song ◽  
Qing Fang ◽  
Mingbin Yu ◽  
Guoqiang Lo ◽  
...  
Keyword(s):  
Coupling Efficiency ◽  
Fiber Waveguide ◽  
Waveguide Coupling

Investigation of Coupling Efficiency by Plastic Deformation of Tube Packaging for Thin-Film-Based Passive Optical Components

2011 ◽  
Vol 189-193 ◽  
pp. 2456-2461
Author(s):  
Sheng Ching Wang ◽  
Chiou Lin Liou ◽  
Hsi Hsun Tsai
Keyword(s):  
Thin Film ◽  
Plastic Deformation ◽  
Optical Fibers ◽  
Coefficient Of Thermal Expansion ◽  
Coupling Efficiency ◽  
Steel Tube ◽  
Stainless Steel Tube ◽  
Element Analysis ◽  
Optical Components ◽  
Fiber Alignment

Thin film based passive optical components assembled with a stainless steel tube via soldering is investigated under a packaging procedure. Finite element analysis is utilized to simulate the packaging procedure in the present study. Mismatch of the coefficient of thermal expansion among various components could induce residual stress over the assembly structure. Coupled thermal-elastoplastic analysis is adopted to predict the plastic deformation of the structure under the solidification process of solder joints. This post-solder-deformation could deteriorate the associated coupling efficiency due to the mis-alignment of the optical fibers. Temperature-dependent mechanical properties of the solder joint are employed in the simulations. Both two-dimensional plane strain and three-dimensional solid models are implemented into the analysis for comparisons. In order to improve the fiber alignment, and thus the coupling efficiency, a three-point bending device is externally loaded on the structure. Unloading procedure is subsequently performed to evaluate the ultimate deformed shape of the structure. Measurements of the insertion loss will be conducted using a power meter in the near future, while a correlation between the coupling efficiency and the fiber alignment can then be expected.

Periodic microstructures for improved lens-to-waveguide coupling efficiency in microlens array planar solar concentrators

2015 ◽  
Vol 5 (1) ◽  
pp. 052099 ◽  
Author(s):  
Ravi S. Hegde ◽  
Hong Son Chu ◽  
Kiansoo Ong ◽  
Lakshmi Kanta Bera ◽  
Ching Eng Png
Keyword(s):  
Coupling Efficiency ◽  
Microlens Array ◽  
Solar Concentrators ◽  
Periodic Microstructures ◽  
Waveguide Coupling
Sign in / Sign up

Export Citation Format

Share Document