Can you please suggest any Secure ftp(SFTP)server for windows

Just google for sftp server for windows and you will find lots of information about that.

and suggest perl module for sftp

On Windows, Net::SFTP::Foreign with the Net::SSH2 backend (Net::SFTP::Foreign::Backend::Net_SSH2) is probably your best option (though my opinion may be a little biased as I am their author ;-).