Surface-emitting device with embedded circular grating coupler for possible application to optoelectronic integrated devices

1995 ◽  
Vol 7 (12) ◽  
pp. 1397-1399 ◽  
Author(s):  
S. Noda ◽  
T. Ishikawa ◽  
M. Imada ◽  
A. Sasaki
Keyword(s):  
Grating Coupler ◽  
Integrated Devices ◽  
Circular Grating

Circular grating coupler for creating focused azimuthally and radially polarized beams

2011 ◽  
Vol 36 (7) ◽  
pp. 1209 ◽  
Author(s):  
Christopher R. Doerr ◽  
Lawrence L. Buhl
Keyword(s):  
Grating Coupler ◽  
Polarized Beams ◽  
Circular Grating ◽  
Radially Polarized

Imaging nanostructures on ablated kapton polymide

1993 ◽  
Vol 51 ◽  
pp. 872-873
Author(s):  
Daniel L. Callahan ◽  
H. M. Phillips ◽  
R. Sauerbrey
Keyword(s):  
Electron Microscopy ◽  
Polymer Surface ◽  
Grating Period ◽  
Laser Wavelength ◽  
Integrated Devices ◽  
Transmission Electron ◽  
Excimer Laser Irradiation ◽  
Produce Line ◽  
Line Patterns ◽  
Anisotropic Conduction

Excimer laser irradiation has been used to interferometrically ablate submicron line patterns on to Kapton polyimide. Such patterned material may exhibit highly anisotropic conduction as was predicted from previous studies showing enhanced conductivity from uniformly ablated material. We are currently exploiting this phenomenon to create integrated devices using conventional polymers as both dielectrics and conductors. Extensive scanning electron microscopy (SEM) and limited transmission electron microscopy (TEM) have been conducted in order to characterize the morphology of such patterned nanostructures as a function of processing conditions.The ablation technique employed produces an interference pattern on the polymer surface of period equal to half that of a diffraction grating period, independent of the laser wavelength. In these experiments, a 328 nm grating has been used to produce line patterns of 164 nm line-spacings as shown in Figures 1 and 2. A 200 Å Au coating has been used to both prevent charging and, perhaps more importantly, enhance contrast.

Integrated Devices for Terabit per Second 1.3 and 1.5 Micron WDM/TDM Network Applications

1996 ◽  
Author(s):  
Prem Kumar ◽  
Seng-Tiong Ho ◽  
Bruce W. Wessels
Keyword(s):  
Network Applications ◽  
Integrated Devices

Optically triggered polarisation bistability in GaInAsP twin stripe injection lasers using integrated devices

1988 ◽  
Vol 24 (19) ◽  
pp. 1232 ◽  
Author(s):  
R.S. Linton ◽  
I.H. White ◽  
J.E. Carroll ◽  
J. Singh ◽  
M.J. Adams ◽  
...  
Keyword(s):  
Integrated Devices ◽  
Injection Lasers

Polarization-independent 1D grating coupler design on the hybrid Si-LNOI platform

2020 ◽  
Author(s):  
Xinyu Ma ◽  
Rong Zeng ◽  
Chijie Zhuang ◽  
Weidong Zhou
Keyword(s):  
Grating Coupler ◽  
1D Grating ◽  
Polarization Independent

scholarly journals Integrated Devices for Non‐Invasive Diagnostics

2021 ◽  
pp. 2010388
Author(s):  
Hatice Ceren Ates ◽  
Anna Brunauer ◽  
Felix Stetten ◽  
Gerald A. Urban ◽  
Firat Güder ◽  
...  
Keyword(s):  
Non Invasive ◽  
Integrated Devices ◽  
Invasive Diagnostics

scholarly journals High-Efficiency Spin-Related Vortex Metalenses

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1485
Author(s):  
Wei Wang ◽  
Ruikang Zhao ◽  
Shilong Chang ◽  
Jing Li ◽  
Yan Shi ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Topological Charge ◽  
High Efficiency ◽  
Infrared Band ◽  
Mid Infrared ◽  
Integrated Devices ◽  
Vortex Beams ◽  
Topological Charges

In this paper, one spin-selected vortex metalens composed of silicon nanobricks is designed and numerically investigated at the mid-infrared band, which can produce vortex beams with different topological charges and achieve different spin lights simultaneously. Another type of spin-independent vortex metalens is also designed, which can focus the vortex beams with the same topological charge at the same position for different spin lights, respectively. Both of the two vortex metalenses can achieve high-efficiency focusing for different spin lights. In addition, the spin-to-orbital angular momentum conversion through the vortex metalens is also discussed in detail. Our work facilitates the establishment of high-efficiency spin-related integrated devices, which is significant for the development of vortex optics and spin optics.

scholarly journals Biaxial 360-degree scanning LIDAR using a liquid crystal control

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Seiji Nishiwaki
Keyword(s):  
Liquid Crystal ◽  
Laser Light ◽  
Side Surface ◽  
Parallel Beam ◽  
Grating Couplers ◽  
Autonomous Cars ◽  
Scanning Lidar ◽  
Center Axis ◽  
Circular Grating ◽  
Segmented Electrode

AbstractSophisticated non-mechanical technology for LIDARs is needed to realize safe autonomous cars. We have confirmed the operating principle of a non-mechanical LIDAR by combining concentric circular-grating couplers (CGCs) with a coaxially aligned rod lens. Laser light incident vertically on the center of the inner CGC along the center axis of the lens is radiated from the outer CGC and passes through the side surface of the lens. It is converted to a parallel beam that scans in two axes by applying voltages to two area-segmented electrode layers sandwiching the CGCs and a liquid crystal layer formed on the CGCs. We have demonstrated scanning whose motion ranges were 360 degrees horizontally and 10° vertically. A beam with a spread angle of 0.3° × 0.8° at a minimum swept vertically up to a frequency of 100 Hz and ten equally spaced beams scanned rotationally with a 6-degree cycle variation of spread of between 0.8° and 3.5°.

Microwave Integrated Devices and Subsystems on Ferrite Substrates

1969 ◽  
Author(s):  
M. Lemke
Keyword(s):  
Integrated Devices
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