Submitted on: 31 January 2007.
Revised on: 04 April 2007.
Accepted on: 01 May 2007.
___________________IET Optoelectronics---WILEY
Submitted on: 07 July 2011.
Revised on: 21 October 2011.
Accepted on: 09 November 2011.
___________________IET Optoelectronics---WILEY
Submitted on: 14 February 2017.
Revised on: 02 April 2017.
Accepted on: 24 April 2017.
___________________IET Optoelectronics---WILEY
http://reply.papertrans.cn/2/122/12183/12183-34.png
http://reply.papertrans.cn/2/122/12183/12183-35.png
Submitted on: 01 June 2020.
Revised on: 05 August 2020.
Accepted on: 25 August 2020.
___________________IET Optoelectronics---WILEY