Parameters optimization of high efficiency discrete Raman fiber amplifier by using the coupled steady-state equations

2007 ◽  
Vol 273 (1) ◽  
pp. 149-152 ◽  
Author(s):  
Liang Dou ◽  
Shien-Kuei Liaw ◽  
Ming Li ◽  
Yi-Tseng Lin ◽  
Anshi Xu
Keyword(s):  
Steady State ◽  
High Efficiency ◽  
Fiber Amplifier ◽  
Parameters Optimization ◽  
State Equations ◽  
Raman Fiber Amplifier

Parameters optimization of a high efficiency discrete Raman fiber amplifier

2007 ◽  
Author(s):  
Liang Dou ◽  
Shien-Kuei Liaw ◽  
Ming Li ◽  
Yi-Tseng Lin ◽  
Anshi Xu
Keyword(s):  
High Efficiency ◽  
Fiber Amplifier ◽  
Parameters Optimization ◽  
Raman Fiber Amplifier

scholarly journals 2 kW high-efficiency Raman fiber amplifier based on passive fiber with dynamic analysis on beam cleanup and fluctuation

2020 ◽  
Vol 28 (3) ◽  
pp. 3495 ◽  
Author(s):  
Yizhu Chen ◽  
Tianfu Yao ◽  
Liangjin Huang ◽  
Hu Xiao ◽  
Jinyong Leng ◽  
...  
Keyword(s):  
Dynamic Analysis ◽  
High Efficiency ◽  
Fiber Amplifier ◽  
Passive Fiber ◽  
Raman Fiber Amplifier

High-efficiency all-fiber Raman fiber amplifier with record output power

2018 ◽  
Vol 15 (8) ◽  
pp. 085104 ◽  
Author(s):  
Yizhu Chen ◽  
Jinyong Leng ◽  
Hu Xiao ◽  
Tianfu Yao ◽  
Jiangming Xu ◽  
...  
Keyword(s):  
Output Power ◽  
High Efficiency ◽  
Fiber Amplifier ◽  
Raman Fiber Amplifier

scholarly journals Study on a Novel High-Efficiency Bridgeless PFC Converter

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Cao Taiqiang ◽  
Chen Zhangyong ◽  
Wang Jun ◽  
Sun Zhang ◽  
Luo Qian ◽  
...  
Keyword(s):  
Steady State ◽  
High Efficiency ◽  
Control Policy ◽  
Switching Frequency ◽  
Fast Recovery ◽  
Zero Current Switching ◽  
Zero Current ◽  
The One ◽  
Gain Characteristic ◽  
Conduction Mode

In order to implement a high-efficiency bridgeless power factor correction converter, a new topology and operation principles of continuous conduction mode (CCM) and DC steady-state character of the converter are analyzed, which show that the converter not only has bipolar-gain characteristic but also has the same characteristic as the traditional Boost converter, while the voltage transfer ratio is not related with the resonant branch parameters and switching frequency. Based on the above topology, a novel bridgeless Bipolar-Gain Pseudo-Boost PFC converter is proposed. With this converter, the diode rectifier bridge of traditional AC-DC converter is eliminated, and zero-current switching of fast recovery diode is achieved. Thus, the efficiency is improved. Next, we also propose the one-cycle control policy of this converter. Finally, experiments are provided to verify the accuracy and feasibility of the proposed converter.

Validation of a new method for determination of free fatty acid turnover

1987 ◽  
Vol 252 (3) ◽  
pp. E431-E438 ◽  
Author(s):  
J. M. Miles ◽  
M. G. Ellman ◽  
K. L. McClean ◽  
M. D. Jensen
Keyword(s):  
Steady State ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Clearance Rate ◽  
Experimental Period ◽  
Metabolic Clearance ◽  
Metabolic Clearance Rate ◽  
State Equations ◽  
Tracer Methods

The accuracy of tracer methods for estimating free fatty acid (FFA) rate of appearance (Ra), either under steady-state conditions or under non-steady-state conditions, has not been previously investigated. In the present study, endogenous lipolysis (traced with 14C palmitate) was suppressed in six mongrel dogs with a high-carbohydrate meal 10 h before the experiment, together with infusions of glucose, propranolol, and nicotinic acid during the experimental period. Both steady-state and non-steady-state equations were used to determine oleate Ra ([3H]oleate) before, during, and after a stepwise infusion of an oleic acid emulsion. Palmitate Ra did not change during the experiment. Steady-state equations gave the best estimates of oleate inflow approximately 93% of the known oleate infusion rate overall, while errors in tracer estimates of inflow were obtained when non-steady-state equations were used. The metabolic clearance rate of oleate was inversely related to plasma concentration (P less than 0.01). In conclusion, accurate estimates of FFA inflow were obtained when steady-state equations were used, even under conditions of abrupt and recent changes in Ra. Non-steady-state equations, in contrast, may provide erroneous estimates of inflow. The decrease in metabolic clearance rate during exogenous infusion of oleate suggests that FFA transport may follow second-order kinetics.

1.3-μm Raman fiber amplifier

2000 ◽  
Author(s):  
Eugeni M. Dianov ◽  
I. A. Bufetov ◽  
Mikhail M. Bubnov ◽  
M. V. Grekov ◽  
Sergei A. Vasiliev ◽  
...  
Keyword(s):  
Fiber Amplifier ◽  
Raman Fiber Amplifier
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