Dear Dr. Zhao,
                          
Since you reviewed an earlier version of the manuscript mentioned below for possible publication in Optical Engineering (OE), I would greatly appreciate your evaluation of the revised manuscript and your judgment as to whether it is ready for publication now. The abstract is also provided below.
                         
 XXXXXX[隐去了作者题目及作者信息。]

        
If you agree to review this manuscript, we would like to receive your comments within 2 weeks.  However, if this time frame will not work out for you, please contact us so that we can extend your review due date to accommodate your schedule.
                             
Please proceed to the following URL to login to the journal's online peer-review site to accept or decline this assignment:
              
http://oe.peerx-press.org/cgi-bin/main.plex
               
To access the decision letter and reviewer comments for the previous version, as well as the author's response, use the links "Original Decision Letter" and "Response to Reviewer Comments," which appear in the Manuscript Items section.
               
If you have any questions or need more information, feel free to contact the OE Editorial Office at oe@spie.org.
              
Thank you for your consideration of this request.
              
Sincerely,
               
              
Ofer Hadar
Associate Editor
Optical Engineering

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Abstract:        
XXXXX(隐去了论文摘要。）