Re: Tunable SFP

[Thomas Weible - FLEXOPTIX <Thomas.Weible () flexoptix net>]

Hi Frank,

> Frank wrote:
> Upon second look, these are "reconfigurable".  Doesn't appear to be the
> same
> as tunable. =( 

These tuneables have three features:

1. Tune 80-DWDM-channels in the 50 / 100 GHz grid -> You can change the
wavelength of the SFP+
2. Reconfigurable -> configure these SFP+ to operate in your used host
system today. Reconfigure these SFP+ to operate in a different host
tomorrow.
3. Combining 1. + 2. -> You can use these tunable SFP+ also in hosts which
do not support wavelength tuning - in this scenario wavelength tuning is
done externally via flexbox. The tunable SFP+ acts like a fixed DWDM SFP+
in your host (or even regular SFP+ ZR if there is no support for fixed
DWDM SFP+) but the physics is still a full tunable DWDM SFP+

> Jared wrote:
> They do exist. They tend to have tighter link budgets as compared to XFP
> tunable optics. Don't expect to go as far due to the receiver
> sensitivity.


One comment regarding the receiver sensitivity. For both (XFP and SFP+
tunable) it is -24dBm because for both formfactors the same APD receiver
is used.


Thanks
    Thomas


> -----Original Message-----
> From: NANOG [mailto:nanog-bounces () nanog org] On Behalf Of Frank Bulk
> Sent: Saturday, June 06, 2015 2:07 PM
> To: nanog () nanog org
> Subject: RE: Tunable SFP
>
> Thanks, that's very helpful.  They have several models there:
> https://www.flexoptix.net/en/produkte/transceiver.html?fo_tra_formfactor=s
> fp
> #fo_tra_formfactor=sfp&fo_tra_interface=05_dwdm_100ghz&gan_data=true
>
> Frank  
>
> -----Original Message-----
> Sent: Saturday, June 06, 2015 1:44 PM
> To: Frank Bulk
> Subject: Re: Tunable SFP
>
> Check out https://www.flexoptix.net/en/
>
> This topic came up last month and a lot of people recommended this
> vendor.  Hope it helps.
>
> On 6/6/2015 10:45 AM, Frank Bulk wrote:
> > Thanks -- can you point me to any suppliers?
> >
> > Frank
> >
> > -----Original Message-----
> > From: Jared Mauch [mailto:jared () puck nether net]
> > Sent: Saturday, June 06, 2015 12:41 PM
> > To: Frank Bulk
> > Cc: <nanog () nanog org>
> > Subject: Re: Tunable SFP
> >
> > They do exist. They tend to have tighter link budgets as compared to XFP
> > tunable optics. Don't expect to go as far due to the receiver
> > sensitivity.
> >
> > Jared Mauch
> >
> > > On Jun 6, 2015, at 1:29 PM, Frank Bulk <frnkblk () iname com> wrote:
> > >
> > > Anyone know if tunable SFPs exist?  I've googled around on this, but
> > > only
> > > found fixed wave-length SFPs.
> > >
> > > Or of a tunable SFP+ that can operate in SFP port as 1G?
> > >
> > > Frank