Submitted on: 09 May 2000.
Revised on: 17 June 2000.
Accepted on: 24 July 2000.
___________________IET Optoelectronics---WILEY
Submitted on: 26 February 2009.
Revised on: 18 March 2009.
Accepted on: 10 April 2009.
___________________IET Optoelectronics---WILEY
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Submitted on: 17 August 1998.
Revised on: 22 November 1998.
Accepted on: 03 December 1998.
___________________IET Optoelectronics---WILEY
Submitted on: 01 January 2003.
Revised on: 11 April 2003.
Accepted on: 28 April 2003.
___________________IET Optoelectronics---WILEY
http://reply.papertrans.cn/2/122/12183/12183-16.png
http://reply.papertrans.cn/2/122/12183/12183-17.png
http://reply.papertrans.cn/2/122/12183/12183-18.png
Submitted on: 08 July 2009.
Revised on: 13 September 2009.
Accepted on: 05 October 2009.
___________________IET Optoelectronics---WILEY
Submitted on: 12 October 2017.
Revised on: 19 December 2017.
Accepted on: 16 February 2018.
___________________IET Optoelectronics---WILEY