That's good you are also working in Nano area! It's my pleasure to know you. About Thin Film and their process, I'm not familiar with. I recommend you to search or learn more about its from publications, it would be much useful for you.
Anyway, if would like to discuss with me some, you may drop your questions at my page. I'll definitely answer you.
The invertion of 10G optical transceiver has greatly increase the networking speed, for the science behind the transceiver, please check website and learn about CWDM SFP transceiver, www.fiberoptictransceiver.net
The XFP (10 Gigabit Small Form Factor Pluggable) is a standard for transceivers for high-speed computer network and telecommunication links that use optical fiber.please visit www.xfptransceiver.com for more info