High-speed photodetector characterization using tunable laser by optical heterodyne technique

2005 ◽  
Author(s):  
Haisheng San ◽  
Jimin Wen ◽  
Liang Xie ◽  
Ninghua Zhu ◽  
Boxue Feng
Keyword(s):  
High Speed ◽  
Tunable Laser ◽  
Optical Heterodyne ◽  
Heterodyne Technique

Frequency Response Bandwidth Calibration of High Speed Photodetector Using Frequency-Stabilized Laser by Optical Heterodyne Technique

2014 ◽  
Vol 644-650 ◽  
pp. 1031-1034
Author(s):  
Nan Xu ◽  
Jian Wei Li ◽  
Jian Li ◽  
Zhi Xin Zhang
Keyword(s):  
Frequency Response ◽  
High Speed ◽  
Beat Frequency ◽  
Tunable Laser ◽  
Laser Source ◽  
Response Measurement ◽  
System A ◽  
Response Bandwidth ◽  
Heterodyne Technique ◽  
Frequency Stabilized Laser

In this paper, frequency-stabilized laser technology is introduced into photodetector frequency response measurement system. A 1531nm frequency-stabilized laser fulfilled by acetylene saturated absorption is employed to produce coherent light with a tunable laser source, gaining stable beat frequency light that reaches as high as several hundred ghz, fulfilling measurement of 40ghz high-speed photodetector frequency response bandwidth, and lowering impacts caused by instability of light frequency. In addition, measurement uncertainty analysis is conducted, which is better than 7 %(k=2).

scholarly journals Effective Generation of Milliwatt-Level Sub-Terahertz Wave for Nonlinear Response Measurement of Two-Dimensional Material by Optical Heterodyne Technique

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Shuqing Chen ◽  
Zhiqiang Xie ◽  
Junmin Liu ◽  
Yanliang He ◽  
Yao Cai ◽  
...  
Keyword(s):  
Nonlinear Response ◽  
Modulation Depth ◽  
Terahertz Wave ◽  
Saturable Absorption ◽  
Optical Heterodyne ◽  
Two Dimensional ◽  
Response Measurement ◽  
Microwave Source ◽  
Terahertz Band ◽  
Heterodyne Technique

By using optical heterodyne technique, we demonstrated the stable emission of sub-terahertz wave with the frequency ranging from 88 GHz to 101 GHz, which can operate as microwave source for nonlinear response measurement system. Mutual frequency beating of two well-separated sideband signals at a 0.1 THz photo-detector (PD) allows for the generation of sub-terahertz signal. Based on this approach, we have achieved the radiation of 0.1 THz wave with power up to 4 mW. By transmittance measurement, two-dimensional nanomaterial topological insulator (TI: Bi2Te3) shows saturable absorption behaviors with normalized modulation depth of 47% at 0.1 THz. Our results show that optical heterodyne technique could be developed as an effective microwave source generation for nonlinear measurement at sub-terahertz, even terahertz band.

Research on high-speed dynamic calibration technology of tunable laser

2019 ◽  
Author(s):  
Hongguang Liang ◽  
Xuefeng Wang ◽  
Caijie Tang ◽  
Mingchao Wang
Keyword(s):  
High Speed ◽  
Tunable Laser ◽  
Dynamic Calibration

Design Challenges of a High Speed Tunable Laser Interrogator for Future Spacecraft Health Monitoring

CLEO: 2015 ◽  
2015 ◽  
Author(s):  
Selwan K. Ibrahim ◽  
John A. O’Dowd ◽  
Raymond McCue ◽  
Arthur Honniball ◽  
Martin Farnan
Keyword(s):  
Health Monitoring ◽  
High Speed ◽  
Tunable Laser ◽  
Design Challenges

Frequency Stabilization of Pulsed Injection-Seeded OPO Based on Optical Heterodyne Technique

2018 ◽  
Vol 35 (2) ◽  
pp. 024201 ◽  
Author(s):  
Xiao Chen ◽  
Xiao-Lei Zhu ◽  
Shi-Guang Li ◽  
Xiu-Hua Ma ◽  
Wei Xie ◽  
...  
Keyword(s):  
Frequency Stabilization ◽  
Optical Heterodyne ◽  
Pulsed Injection ◽  
Heterodyne Technique
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