Fiber-optic frequency discriminator for microwave optical communications

1985 ◽  
Author(s):  
J. E. Bowers ◽  
B. G. Koehler
Keyword(s):  
Optical Communications ◽  
Fiber Optic ◽  
Frequency Discriminator

300°C Optical Communications

2021 ◽  
Vol 2021 (HiTEC) ◽  
pp. 000013-000017
Author(s):  
Emad Andarawis ◽  
Cheng-Po (Paul) Chen ◽  
Baokai Cheng
Keyword(s):  
Optical Communications ◽  
Dark Current ◽  
Room Temperature ◽  
Fiber Optic ◽  
Extreme Temperature ◽  
Wide Bandgap ◽  
Fiber Optic Cable ◽  
Optical Link ◽  
Data Rates ◽  
Light Coupling

Abstract A high temperature optical link capable of multi-megabits per second data rates at 300°C is presented. The system utilizes wide bandgap optical sources and detectors to achieve extreme temperature operation. Testing was conducted at multiple temperatures between room temperature and 325°C and at multiple light source currents. Light coupling into and out of a UV capable optical fiber was evaluated, and a model was created utilizing the test data of the photodiode dark current and the fiber optic cable insertion loss and attenuation and assess optical communications capability to 325°C and beyond.

Fiber optic bundle array wide field-of-view optical receiver for free space optical communications

2010 ◽  
Vol 35 (21) ◽  
pp. 3559 ◽  
Author(s):  
Daniel V. Hahn ◽  
David M. Brown ◽  
Nathan W. Rolander ◽  
Joseph E. Sluz ◽  
Radha Venkat
Keyword(s):  
Optical Communications ◽  
Free Space ◽  
Fiber Optic ◽  
Optical Receiver ◽  
Field Of View ◽  
Wide Field ◽  
Free Space Optical ◽  
Wide Field Of View

Experimental implementation of fiber optic bundle array wide FOV free space optical communications receiver

2012 ◽  
Vol 51 (18) ◽  
pp. 3995 ◽  
Author(s):  
Andrea M. Brown ◽  
Daniel V. Hahn ◽  
David M. Brown ◽  
Nathan W. Rolander ◽  
Chun-Huei Bair ◽  
...  
Keyword(s):  
Optical Communications ◽  
Free Space ◽  
Fiber Optic ◽  
Free Space Optical ◽  
Experimental Implementation ◽  
Wide Fov

Imaging and diffraction modes in Scanning Transmission Electron Microscopy

1986 ◽  
Vol 44 ◽  
pp. 684-687
Author(s):  
J. M. Cowley ◽  
R. Glaisher ◽  
J. A. Lin ◽  
H.-J. Ou
Keyword(s):  
Scanning Transmission Electron Microscopy ◽  
High Efficiency ◽  
Fiber Optic ◽  
Image Intensifier ◽  
Detector System ◽  
Detector Plane ◽  
Secondary Electrons ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Special Detector

Some of the most important applications of STEM depend on the variety of imaging and diffraction made possible by the versatility of the detector system and the serial nature, of the image acquisition. A special detector system, previously described, has been added to our STEM instrument to allow us to take full advantage of this versatility. In this, the diffraction pattern in the detector plane may be formed on either of two phosphor screens, one with P47 (very fast) phosphor and the other with P20 (high efficiency) phosphor. The light from the phosphor is conveyed through a fiber-optic rod to an image intensifier and TV system and may be photographed, recorded on videotape, or stored digitally on a frame store. The P47 screen has a hole through it to allow electrons to enter a Gatan EELS spectrometer. Recently a modified SEM detector has been added so that high resolution (10Å) imaging with secondary electrons may be used in conjunction with other modes.

Sign in / Sign up

Export Citation Format

Share Document