Effect of polarization dependent loss on the DOP feedback signal in PMD compensation

2006 ◽  
Author(s):  
Lu Zhang ◽  
Peng Song ◽  
Qianggao Hu ◽  
Shengzhi Zhao ◽  
Shan Jiang
Keyword(s):  
Feedback Signal ◽  
Polarization Dependent Loss ◽  
Pmd Compensation

Effect of PDL on the DOP feedback signal in PMD compensation

2006 ◽  
Vol 24 (2) ◽  
pp. 797-804 ◽  
Author(s):  
Lu Zhang ◽  
Qianggao Hu ◽  
Shengzhi Zhao ◽  
Shuihua Liu ◽  
Yuanzhong Xu
Keyword(s):  
Feedback Signal ◽  
Pmd Compensation

Effect of chromatic dispersion and initial chirp on the DOP feedback signal in PMD compensation

2005 ◽  
Vol 17 (2) ◽  
pp. 342-344 ◽  
Author(s):  
Lu Zhang ◽  
Yuan Zhong Xu ◽  
Qiang Gao Hu ◽  
Sheng Zhi Zhao ◽  
Shui Hua Liu
Keyword(s):  
Chromatic Dispersion ◽  
Feedback Signal ◽  
Pmd Compensation

Theory and experiment of PMD compensation with DOP as feedback signal

2005 ◽  
Author(s):  
Lin Chen ◽  
Gao Y. Duan ◽  
Bo J. Yan ◽  
Ru Zhang ◽  
Li Yu ◽  
...  
Keyword(s):  
Feedback Signal ◽  
Pmd Compensation ◽  
Theory And Experiment

Limitation of PMD compensation due to polarization-dependent loss in high-speed optical transmission links

2002 ◽  
Vol 14 (1) ◽  
pp. 104-106 ◽  
Author(s):  
Na Young Kim ◽  
Duckey Lee ◽  
Hosung Yoon ◽  
Jaehyoung Park ◽  
Namkyoo Park
Keyword(s):  
High Speed ◽  
Optical Transmission ◽  
Polarization Dependent Loss ◽  
Pmd Compensation

scholarly journals The impedance analysis of small intestine fusion by pulse source

2020 ◽  
Vol 15 (1) ◽  
pp. 808-818
Author(s):  
Yifan Wang ◽  
Kefu Liu ◽  
Xiaowei Xiang ◽  
Caihui Zhu ◽  
Hao Wang
Keyword(s):  
Small Intestine ◽  
Pressure Gauge ◽  
Equivalent Circuit Model ◽  
Impedance Measurement ◽  
Impedance Analysis ◽  
Duty Ratio ◽  
Feedback Signal ◽  
Pulse Source ◽  
Compression Pressure ◽  
Output Time

AbstractThe radiofrequency-induced intestine fusion has been widely studied as an alternative for traditional suture in surgery, but fusion quality cannot be evaluated directly. Impedance measurement can evaluate fusion quality, but the relation between impedance and the fusion quality needs optimization for best results. The present study reports the optimum resistance of small intestine fusion. As the feedback signal, resistance was considered the indicator of the fusion completion for the device design of intestine fusion and an in-depth study of microstructure change. A self-design pulse source was used for the small intestine fusion with adjustable voltage, duty ratio, frequency and output time. A frequency of 440 kHz was set, whereas voltage, output time and compression pressure (CP) of the small intestine were independent variables. Different conditions of voltage, CP and time were investigated for achieving the highest burst pressure (BP) measured with a pressure gauge and a peristaltic pump. Each parameter of the equivalent circuit model was calculated by an experimental waveform. Hematoxylin–eosin staining of fusion samples was used for assessing the quality of fusion. The real-time current was measured and recorded during the fusion for the calculation of capacitance and resistance. The highest BP of 38.9 mmHg was achieved with a CP of 900 kPa, a voltage of 50 V and a time of 5 s. Finally, an optimum extracellular resistance range of 61.0–86.2 Ω was found as the optimum resistance for the end of fusion, thus indicating automatic fusion with the best fusion quality.

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