Digital implementation of a two-way coherent phase transfer over optical fiber for remote clocks comparisons

2014 ◽  
Author(s):  
C. E. Calosso ◽  
E. Bertacco ◽  
D. Calonico ◽  
C. Clivati ◽  
G. A. Costanzo ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Phase Transfer ◽  
Digital Implementation ◽  
Coherent Phase

A Generic PWM Scheme Be Used for CSC

2012 ◽  
Vol 614-615 ◽  
pp. 1519-1523
Author(s):  
Tai Bin Cao ◽  
Man Lin Chen
Keyword(s):  
Phase Transfer ◽  
Switching Frequency ◽  
The Novel ◽  
Phase Line ◽  
Digital Implementation ◽  
Switching Patterns ◽  
Three Phase ◽  
Modulation Signal ◽  
Current Utilization ◽  
Dc Current

In order to overcome the drawbacks of the conventional SPWM for three-phase CSC, this paper presents a generic novel PWM scheme. In the novel PWM scheme, one line cycle is divided into six 60° intervals, and during each interval, only two references are used to compare with the carriers to directly generate the required switching patterns. Because of the optional modulation signal, the modulation technique has the advantages of flexible and easy digital implementation. It is shown that, compared with the conventional SPWM, the novel PWM scheme has lower switching frequency, higher dc current utilization ratio and in-phase transfer between the three-phase line currents and the reference signals. Finally, the propositions are verified by the experimental results.

Coherent phase transfer via fiber using heterodyne optical phase locking as optical amplification

2018 ◽  
Vol 57 (32) ◽  
pp. 9620 ◽  
Author(s):  
Xue Deng ◽  
Jie Liu ◽  
Qi Zang ◽  
Dongdong Jiao ◽  
Jing Gao ◽  
...  
Keyword(s):  
Phase Transfer ◽  
Phase Locking ◽  
Optical Amplification ◽  
Optical Phase ◽  
Coherent Phase

Nano-Strain Optical Fiber Sensing System Based on Coherent Phase Detection Technology

2021 ◽  
Author(s):  
Zhengxuan Shi ◽  
Baoqiang Yan ◽  
Cunzheng Fan ◽  
Hao Li ◽  
Yuezhen Sun ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Phase Detection ◽  
Fiber Sensing ◽  
Sensing System ◽  
Coherent Phase ◽  
Detection Technology ◽  
Optical Fiber Sensing

scholarly journals Coherent phase transfer and pulse compression at 14  μm in a backward-wave OPO

2019 ◽  
Vol 44 (12) ◽  
pp. 3066 ◽  
Author(s):  
Anne-Lise Viotti ◽  
Fredrik Laurell ◽  
Andrius Zukauskas ◽  
Carlota Canalias ◽  
Valdas Pasiskevicius
Keyword(s):  
Pulse Compression ◽  
Phase Transfer ◽  
Coherent Phase ◽  
Backward Wave

Phase properties of coherent phase and generalized geometric states

1997 ◽  
Vol 44 (1) ◽  
pp. 149-162 ◽  
Author(s):  
A.-S. F. OBADA, O. M. YASSIN and STEPHEN
Keyword(s):  
Coherent Phase ◽  
Phase Properties

Bending loss formulas for step-index optical fiber and their applicable regions

1981 ◽  
Vol 64 (10) ◽  
pp. 95-103
Author(s):  
Kiyonobu Kusano ◽  
Shigeo Nishida
Keyword(s):  
Optical Fiber ◽  
Step Index ◽  
Bending Loss
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