Submitted on: 09 May 2020.
Revised on: 14 June 2020.
Accepted on: 04 August 2020.
___________________APPLIED OPTICS---OPTICA PUBLISHING GROUP
Submitted on: 25 July 2014.
Revised on: 14 October 2014.
Accepted on: 07 December 2014.
___________________APPLIED OPTICS---OPTICA PUBLISHING GROUP
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Submitted on: 25 May 2015.
Revised on: 26 June 2015.
Accepted on: 13 July 2015.
___________________APPLIED OPTICS---OPTICA PUBLISHING GROUP
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Submitted on: 20 July 2020.
Revised on: 09 November 2020.
Accepted on: 12 December 2020.
___________________APPLIED OPTICS---OPTICA PUBLISHING GROUP
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http://reply.papertrans.cn/1/23/2246/2246-18.png
Submitted on: 26 October 2001.
Revised on: 23 January 2002.
Accepted on: 09 March 2002.
___________________APPLIED OPTICS---OPTICA PUBLISHING GROUP
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