1310/1550 nm SMF-FSO-SMF transmission without intermediate O/E conversion using automatic optical-axis alignment method

2007 ◽  
Author(s):  
T. Tsujimura ◽  
K. Yoshida ◽  
K. Shiraki ◽  
I. Sankawa
Keyword(s):  
Optical Axis ◽  
Alignment Method ◽  
Axis Alignment

scholarly journals Automated Axis Alignment for a Nanomanipulator inside SEM and Its Error Optimization

Scanning ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Chao Zhou ◽  
Lu Deng ◽  
Long Cheng ◽  
Zhiqiang Cao ◽  
Shuo Wang ◽  
...  
Keyword(s):  
Average Method ◽  
Closed Loop ◽  
Alignment Method ◽  
Visual Servo ◽  
End Effector ◽  
Axis Alignment ◽  
Deposition Effect ◽  
Relationship Of ◽  
The Relationship ◽  
Error Optimization

In the motion of probing nanostructures, repeating position and movement is frequently happing and tolerance for position error is stringent. The consistency between the axis of manipulators and image is very significant since the visual servo is the most important tool in the automated manipulation. This paper proposed an automated axis alignment method for a nanomanipulator inside the SEM by recognizing the position of a closed-loop controlling the end-effector, which can characterize the relationship of these two axes, and then the rotation matrix can be calculated accordingly. The error of this method and its transfer function are also calculated to compare the iteration method and average method. The method in this paper can accelerate the process of axis alignment to avoid the electron beam induced deposition effect on the end tips. Experiment demonstration shows that it can achieve a 0.1-degree precision in 90 seconds.

Experimental Study on Optical Axis Alignment of the Optical Antenna under the Spot Broken

2017 ◽  
Vol 46 (4) ◽  
pp. 406002
Author(s):  
柯熙政 KE Xi-zheng ◽  
李世艳 LI Shi-yan
Keyword(s):  
Experimental Study ◽  
Optical Axis ◽  
Optical Antenna ◽  
Axis Alignment

Image-height offset in TTL on-axis alignment method

1990 ◽  
Author(s):  
Noriaki Ishio ◽  
Keiji Fujiwara ◽  
Hitoshi Nagata
Keyword(s):  
Alignment Method ◽  
Axis Alignment

Axis-alignment method for arc-fusion splice of single-mode fiber using a beam splitter

1983 ◽  
Vol 8 (9) ◽  
pp. 502 ◽  
Author(s):  
Kengo Imon ◽  
Masamitsu Tokuda
Keyword(s):  
Beam Splitter ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Alignment Method ◽  
Axis Alignment

The Design of Gaussian Matching Model in the Optical Axis Alignment

2012 ◽  
Vol 271-272 ◽  
pp. 1164-1167
Author(s):  
Yi Feng Zhu ◽  
Lin Tao Yu ◽  
Lei Shi ◽  
Rui Rui Shang
Keyword(s):  
Information Transmission ◽  
Atmospheric Turbulence ◽  
Optical Axis ◽  
Alignment Accuracy ◽  
Matching Algorithm ◽  
Gaussian Fitting ◽  
Axis Alignment ◽  
Laser Communications ◽  
Spot Image ◽  
Outdoor Experiments

In the space laser communications, Information transmission by atmospheric turbulence and background light and other atmospheric interference of the random channel. Resulting in the optical axis alignment accuracy decreased. In order to improve the alignment accuracy of the optical axis, Proposing the Gaussian fitting matching algorithm. Outdoor experiments confirmed the Gaussian fitting matching algorithm to ensure a stable spot image.

Structure Design of Transmissive Switch-Zoom Infrared Systems

2013 ◽  
Vol 712-715 ◽  
pp. 2169-2172
Author(s):  
Qing Lian Jia ◽  
Li Wei Song
Keyword(s):  
Optical Axis ◽  
Design Method ◽  
Optical Design ◽  
Structure Design ◽  
Radial Clearance ◽  
Zoom Lens ◽  
Alignment Method ◽  
Machine Experiment ◽  
Optical Structure ◽  
System Axis

A new optical structure design method was proposed by forward-object lens, zoom lens, focus lens and behind-object lens with transmissive switch-zoom infrared system. And an alignment method of the above structure was proposed to assure the imaging precision. The larger caliber forward lens structure was designed to immovably axial with system axis, while the zoom lens structure was designed to three different structures by actual optical design for reducing system dimension. The focus lens structure was absolute configuration for the stabilization during focus. The rear lens structure was also designed to small radial clearance. A through-shaft type tooling was proposed to cooperate to adjusting and confirming of the system optical axis by exact boring machine. Experiment results showed that the alignment method can be assured precision and economized cost.

Core-axis-alignment method to achieve ultra-low-loss fusion splicing for single-mode optical fibers

1984 ◽  
Vol 9 (6) ◽  
pp. 255 ◽  
Author(s):  
Osamu Kawata ◽  
Kouichi Hoshino ◽  
Koushi Ishihara
Keyword(s):  
Optical Fibers ◽  
Single Mode ◽  
Alignment Method ◽  
Low Loss ◽  
Axis Alignment

Two-Mirror Telescope Optical Axis Alignment by Additive Color Mixing Method

2016 ◽  
pp. 731-741
Author(s):  
Feng-Ming Yeh ◽  
Der-Chin Chen ◽  
Shih-Chieh Lee ◽  
Ya-Hui Hsieh
Keyword(s):  
Optical Axis ◽  
Axis Alignment ◽  
Mixing Method ◽  
Color Mixing ◽  
Mirror Telescope
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