Submitted on: 21 August 2017.
Revised on: 30 November 2017.
Accepted on: 06 January 2018.
___________________Frontiers of Optoelectronics---HIGHER EDUCATION PRESS
Submitted on: 05 July 2018.
Revised on: 20 October 2018.
Accepted on: 10 December 2018.
___________________Frontiers of Optoelectronics---HIGHER EDUCATION PRESS
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http://reply.papertrans.cn/2/103/10266/10266-34.png
Submitted on: 15 March 2015.
Revised on: 09 April 2015.
Accepted on: 26 May 2015.
___________________Frontiers of Optoelectronics---HIGHER EDUCATION PRESS
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