Tunable SFP

Sun Jun 7 09:20:35 UTC 2015

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 at nanog.org] On Behalf Of Frank Bulk
>Sent: Saturday, June 06, 2015 2:07 PM
>To: nanog at 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 at puck.nether.net]
>> Sent: Saturday, June 06, 2015 12:41 PM
>> To: Frank Bulk
>> Cc: <nanog at 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 at 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
>>
>>
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