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