See below reference, it explain SFP well.
http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6577/product_data_sheet0900aecd8033f885.html
http://www.cisco.com/en/US/products/hw/modules/ps4999/products_tech_note09186a00807a30d6.shtml
About Us
The www.ipBalance.com runs by a volunteer group with IT professionals and experts at least over 25 years of experience developing and troubleshooting IT in general. ipBalance.com is a free online resource that offers IT tutorials, tools, product reviews, and other resources to help you and your need.
You may connect us on LinkedIn and Twitter.
Copyright © 2024 www.ipBalance.com