[j-nsp] DWDM 10Gig transmit power

Ben Steele ben at bensteele.org
Wed Aug 4 03:33:09 EDT 2010


-3.56 is fine, question is what are they seeing at their end on the rx?
quite possibly you have some unwanted attenuation along the path between
your optic(tx->) and their optic(->rx).

Ben

On Wed, Aug 4, 2010 at 5:08 PM, Good One <good1 at live.com> wrote:

>
>
> I am trying to find out what is causing my link to go down either the
> transmit power or a receive power. Below are the parameters of link having a
> connectivity issue of DWDM transmission. The problem is sometimes it works
> and sometime it does not and transmission guys keep insisting that your
> transmit power is low. Now the question is if the transmit power is low, can
> you increase it for a particular link. Physical interface: xe-4/2/0    Laser
> bias current                        :  33.111 mA    Laser output power
>                  :  0.4410 mW / -3.56 dBm    Module temperature
>            :  30 degrees C / 86 degrees F    Laser rx power
>            :  0.2516 mW / -5.99 dBm
> I have another link over same DWDM transmission which is working quite fine
> for days. The following are the parameters for that link.
> Physical interface: xe-4/3/0    Laser bias current                        :
>  32.748 mA    Laser output power                        :  0.5060 mW / -2.96
> dBm    Module temperature                        :  31 degrees C / 88
> degrees F    Laser rx power                            :  0.2538 mW / -5.96
> dBm
> I would appreciate it if someone can describe it in detail that what could
> be the reason causing this link to fluctuate randomly.
> Thanks
> Andrew
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