Hi Baldur,
Le 07/08/2018 à 21:46, Baldur Norddahl a écrit :
> Would it be possible to use an optical circulator like this one
> (customized to 1310 nm)?
>
> Has anyone done this? Any reason it would not work?
While it often does work, reflectance is a bitch.
I'd advise you to order some
> On Aug 13, 2018, at 5:56 PM, Eric Kuhnke wrote:
>
> For 1 and 10Gbps OOK modulation yes, but not for something like a ITU DWDM
> grid channelized or tunable coherent optic. In which the (QPSK, 8PSK, 16QAM)
> signal has a specific THz width and frequency not unlike a radio operating in
>
13, 2018 4:24 PM
To: Jameson, Daniel
Cc: Eric Kuhnke; nanog@nanog.org list
Subject: Re: optical circulator as a bidirectional one fiber solution
What about 100Ghz ITU spacing on the tx, are the rx optics broad enough to take
the off-band input?
-Ben
On Aug 13, 2018, at 3:19 PM, Jameson, Daniel
On 08/13/2018 06:24 PM, Ben Cannon wrote:
What about 100Ghz ITU spacing on the tx, are the rx optics broad enough
to take the off-band input?
Non-coherent receivers usually seem to even when paired with DWDM grid
transceivers. You're paying for the tightly controlled laser on those,
not so
@6by7.net; nanog@nanog.org list
> Subject: Re: optical circulator as a bidirectional one fiber solution
>
> For 1 and 10Gbps OOK modulation yes, but not for something like a ITU DWDM
> grid channelized or tunable coherent optic. In which the (QPSK, 8PSK, 16QAM)
> signal has a s
Of Eric Kuhnke
Sent: Monday, August 13, 2018 3:56 PM
To: b...@6by7.net; nanog@nanog.org list
Subject: Re: optical circulator as a bidirectional one fiber solution
For 1 and 10Gbps OOK modulation yes, but not for something like a ITU DWDM grid
channelized or tunable coherent optic. In which the (QPSK
For 1 and 10Gbps OOK modulation yes, but not for something like a ITU DWDM
grid channelized or tunable coherent optic. In which the (QPSK, 8PSK,
16QAM) signal has a specific THz width and frequency not unlike a radio
operating in a very, very narrow waveguide.
On Mon, Aug 13, 2018 at 1:57 PM Ben
Good news about almost all optics, their Rx window is pretty wide. Meaning a
1550nm optic will activate the receiver on a 1560nm optic just fine (and
probably anything in the 1500nm band). Careful use of specialized single
strand DWDM muxes (FS.com) can yield great bidi-like results with
Something that is broadly the same as a coherent 100G QPSK single
wavelength optical module, but in two different frequencies, and a passive
CWDM mux/demux prism at each end might work. The limitation would be
availability of optics for a modern 100G MSA that are both coherent and
Tx/Rx at two
On 8/7/2018 15:46:03, "Baldur Norddahl"
wrote:
Hello
There is a lack of bidirectional one fiber (BIDI) options for 40G and
100G optics. Usually BIDI is implemented using two CWDM wavelengths,
one for tx and one for rx. However there is also a lack of CWDM and
DWDM options for 40G and
10 matches
Mail list logo
