Mastering the effects of air turbulence in optical component interferometric metrology

2021 ◽  
Author(s):  
Manuel Mestre ◽  
Frank A. DeWitt
Keyword(s):  
Optical Component ◽  
Air Turbulence

EXPRESS: Design Considerations for Discrete Frequency Infrared Microscopy Systems

2021 ◽  
pp. 000370282110133
Author(s):  
Rohit Bhargava ◽  
Yamuna Dilip Phal ◽  
Kevin Yeh
Keyword(s):  
Imaging System ◽  
Chemical Imaging ◽  
Optical Component ◽  
Imaging Systems ◽  
Imaging Data ◽  
Discrete Frequency ◽  
Figures Of Merit ◽  
Design Considerations ◽  
Hardware Implementations ◽  
Measurement Capabilities

Discrete frequency infrared (DFIR) chemical imaging is transforming the practice of microspectroscopy by enabling a diversity of instrumentation and new measurement capabilities. While a variety of hardware implementations have been realized, considerations in the design of all-IR microscopes have not yet been compiled. Here we describe the evolution of IR microscopes, provide rationales for design choices, and the major considerations for each optical component that together comprise an imaging system. We analyze design choices in illustrative examples that use these components to optimize performance, under their particular constraints. We then summarize a framework to assess the factors that determine an instrument’s performance mathematically. Finally, we summarize the design and analysis approach by enumerating performance figures of merit for spectroscopic imaging data that can be used to evaluate the capabilities of imaging systems or suitability for specific intended applications. Together, the presented concepts and examples should aid in understanding available instrument configurations, while guiding innovations in design of the next generation of IR chemical imaging spectrometers.

scholarly journals In-Process Diameter Measurement Technique for Micro-Optical Fiber with Standing Wave Illumination

2021 ◽  
Author(s):  
Masaki Michihata ◽  
Zhao Zheng ◽  
Daiki Funaiwa ◽  
Sojiro Murakami ◽  
Shotaro Kadoya ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Standing Wave ◽  
Dynamic Range ◽  
Scattered Light ◽  
High Dynamic Range ◽  
Measurement Range ◽  
Diameter Distribution ◽  
Process Measurement ◽  
Air Turbulence ◽  
Tapered Optical Fiber

AbstractIn this paper, we propose an in-process measurement method of the diameter of micro-optical fiber such as a tapered optical fiber. The proposed technique is based on analyzing optically scattered light generated by standing wave illumination. The proposed method is significant in that it requires an only limited measurement range and does not require a high dynamic range sensor. These properties are suitable for in-process measurement. This experiment verified that the proposed method could measure a fiber diameter as stable as ± 0.01 μm under an air turbulence environment. As a result of comparing the measured diameter distribution with those by scanning electron microscopy, it was confirmed that the proposed method has a measurement accuracy better than several hundred nanometers.

scholarly journals High aspect ratio microdisplay and thin optical component for glass-like AR devices

2021 ◽  
pp. 1-9
Author(s):  
Chan-mo Kang ◽  
Jin-Wook Shin ◽  
Sukyung Choi ◽  
Byoung-Hwa Kwon ◽  
Hyunsu Cho ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Optical Component

Optical component coupling using self-written waveguides

2002 ◽  
Author(s):  
Naohiro Hirose ◽  
Tetsuzo Yoshimura ◽  
Osamu Ibaragi
Keyword(s):  
Optical Component

scholarly journals The glass-molding process for planar-integrated micro-optical component

2011 ◽  
Vol 18 (1) ◽  
pp. 96-98 ◽  
Author(s):  
Chien-Yao Huang ◽  
Jyh-Rou Sze ◽  
Kuo-Cheng Huang ◽  
Chao-Hui Kuo ◽  
Shih-Feng Tseng ◽  
...  
Keyword(s):  
Optical Component ◽  
Molding Process ◽  
Glass Molding

scholarly journals Evaluation on fiber boot of optical component by bend radius measurement in side pull test

2005 ◽  
Vol 2 (6) ◽  
pp. 205-210
Author(s):  
Chia-Chen Chang ◽  
Zuyuan He ◽  
Gregory Senft ◽  
Nasir Ahmad ◽  
Erin Sahinci ◽  
...  
Keyword(s):  
Optical Component ◽  
Bend Radius ◽  
Pull Test

scholarly journals Construction of rugged, ultrastable optical assemblies with optical component alignment at the few microradian level

2013 ◽  
Vol 52 (2) ◽  
pp. 177 ◽  
Author(s):  
Christian J. Killow ◽  
Ewan D. Fitzsimons ◽  
James Hough ◽  
Michael Perreur-Lloyd ◽  
David I. Robertson ◽  
...  
Keyword(s):  
Optical Component ◽  
Component Alignment
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