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

[Eric Litvin <eric () lumaoptics net>]

Faisal,

You don't need to worry about power range when connecting SR or LR.
However, an ER or ZR on a loopback can damage Rx. The strength of the
receiving signal is always under the tolerance allowed. The 850nm Light is
attenuated very quickly because of the MMF and the 850nm light source. This
light source is more like an LED than a Laser.  The MTTF on any transceiver
is 50,000 hours at room temperature. A bigger factor is high temperature,
because the chip is a semiconductor.


Eric Litvin

President

eric () lumaoptics net
Direct: (650)440-4382

Mobile:(*650)996-7270*
Fax: (650) 618-1870

On Wed, Feb 11, 2015 at 12:48 PM, Faisal Imtiaz <faisal () snappytelecom net>
wrote:

> 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 ?
> (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



-- 

Eric Litvin

President

eric () lumaoptics net
Direct: (650)440-4382

Mobile:(*650)996-7270 <650%29996-7270>*
Fax: (650) 618-1870