nanog mailing list archives

Re: MultiMode Fiber Connectivity... (850nm) Power Question


From: Faisal Imtiaz <faisal () snappytelecom net>
Date: Wed, 11 Feb 2015 21:33:40 +0000 (GMT)

Thank you guys (Bob, Brandon & Eric) for the prompt answer.


Regards.

Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232

Help-desk: (305)663-5518 Option 2 or Email: Support () Snappytelecom net 

----- Original Message -----
From: "Bob Evans" <bob () FiberInternetCenter com>
To: "Faisal Imtiaz" <faisal () snappytelecom net>
Cc: "NANOG" <nanog () nanog org>
Sent: Wednesday, February 11, 2015 4:06:23 PM
Subject: Re: MultiMode Fiber Connectivity... (850nm) Power Question


Thank You
Bob Evans
CTO




Hello,

I was looking for feedback on the following question:-

When connecting two MM SFP/SFP+/XFP 's together...(short range).

What should be the best practice receive power range ?

Is it true that if the rx power is higher than (x?) then it shortens the
life of the optics ?

Yes, but thats only true about single mode frequencies not multimode (MM)
because those are not as powerful. All MM is expected to go a very limited
distance, so levels are never high. We have MM 3 foot jumpers between gear
running for years.

(assumption being made here is that MAX Rx Power is not being exceed as
per the spec sheets of the optics)

Regards

Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232

Help-desk: (305)663-5518 Option 2 or Email: Support () Snappytelecom net






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