Need help for Fiber GLC-LH-SM connection between Cisco 3750

Please help me. I want to connect my two Cisco 3750 switch by gbic GLC-LH-SM .Unfortunately, when i trying to connect,it's not uplink.

More information about two switch below:
Gi1/0/51 notconnect 1 auto auto 1000BaseLX SFP

switch 2 show interface status
Gi2/0/51 notconnect 1 auto auto 1000BaseLX SFP

I have no idea to deal with it,any ideas ?

Make sure the connecting point is OK.

here is more information about it http://www.optical-transceiver.com/glc-lh-sm-cisco-1000base-lx-sfp-compatible-transceiver-p-1106

Whoa way over my head. Qain! where are you now?