11
votes
Can a single optical fiber support full-duplex communication?
Can a single optical fiber support full-duplex communication?
Yes. There are "BX" standards, e.g. 100BASE-BX, which use different wavelengths for send and receive. The transmit wavelength on one end ...
- 100k
7
votes
Accepted
Can a pair of matching WDM transceivers be connected directly?
Mutiplexers arrange multiple wavelengths onto a shared fiber - they don't change the signals. So yes, if the transmitter/receiver wavelengths match you can connect two transceivers with standard patch ...
- 86.4k
6
votes
Can a single optical fiber support full-duplex communication?
A full duplex or Bidirection communication meaning that it can support both stations transmitting and receiving simultaneously.
To accomplish this, a single optical fiber with WDM technology is ...
- 334
4
votes
Accepted
Optical fibers out of service
does a bad equipment or a too high signal could break an optical fiber silica
Not likely. To actually damage the fiber, you'd need very high transmit power (several Watt) not common with off-the-...
- 86.4k
3
votes
Are optical Gigabit SFP modules backwards compatible with 100Base-Fx?
0/100M Single mode WDM 20Km Tx1550nm/Rx1310nm
That's actually for the 100BASE-BX10 standard (-Downlink variant), boosted to 20 km. You can buy those SFP modules from some vendors. 100BASE-LX10 uses a ...
- 86.4k
3
votes
Accepted
Get the raw binary stream from an optical fiber
The optical signal is a binary stream. I assume you mean to diagnose the equivalent electrical signal.
SFP transceivers are ignorant to the actual L1 protocol in use. Their main job is to convert an ...
- 86.4k
3
votes
Accepted
ROADM and OXC and their differences
An optical cross-connect is a more general term for an optical switching device. The switching can be done electronically, purely optically, or mixed.
An optical add-drop multiplexer is a more ...
- 86.4k
3
votes
Can a single optical fiber support full-duplex communication?
Yes, if you have the right hardware.
Normally a seperate strand of fiber is used for each direction. This keeps the transcievers simple and allows the same transcievers to be used for both ends of the ...
- 13.6k
3
votes
Accepted
Power at the terminals of a PLC fiber optic splitter
Here is an answer I found at the web site of a fiber optics manufacturer
A common question we receive is whether a 50/50 beamsplitter can be used in reverse, to combine the
signals ...
- 59
2
votes
Splicing g. 655 with g. 652?
Stay on G655, and if you want to minimize the loss, switch the optics to 1550nm (You can use 1 DWDM frequency without splitter)...
This is a good solution to make your fiber ready for a DWDM upgrade.
...
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2
votes
DWDM active and passive comparison
Another advantage of active DWDM vs passive is:
dynamic provisioning (no need to go on-site to plug in the right optics)
you can do L1 encryption
- 21
2
votes
DWDM active and passive comparison
A big point in favour of active would be OTN (optical transport network) which gives advantages such as FEC (standard Reed Solomon FEC is the equivalent of 6dB gain, other implementations such as ...
- 21
2
votes
Can a single optical fiber support full-duplex communication?
Single strand fiber transmission use a single strand of glass (optical fiber) to send data in both directions, namely bidirectional (BiDi) transmission. In recent years, the mainstream single strand ...
- 356
2
votes
Accepted
Is it possible to run PPPoE and dot1Q protocol simultaneously on a cisco router?
Now that your question is a bit more clear, you con connect the switch to the router on one of the copper interfaces. Just configure the link between the router and the switch as a trunk link. If you ...
- 100k
2
votes
Accepted
Troubles wiring two network rooms with optical fiber and SFP-enabled switches
In addition to Ron's excellent answer:
1000BASE-SX runs on OM3 for up to 550 m officially - hope you're not exceeding that (too far).
Also with the majority of switches, the SFP modules must be ...
- 86.4k
2
votes
Accepted
GPON upstream frames capture
GPON is a a collective term for various technology including 1G Ethernet variants (1000BASE-PX10, 1000BASE-PX20) or 10G-EPON 10GBASE-P(X). However, most Ethernet equipment isn't compatible with -P. ...
- 86.4k
2
votes
Accepted
Using XFP-10G (120 KM Range) on Juniper MX routers
When we run the command 'show chassis hardware' , there is no such mentioning that its a NON-JNPR XFP. Based on this , can we say confidently that it must be XFP from Juniper side?
The thing you're ...
- 7,154
2
votes
Accepted
Exceeding SFP manufacturer maximum distance
What are the consequences of exceeding the SFP manufacturer maximum distance ?
Very simple: anything between nothing over spurious data errors (effectively frame drops) to total link loss.
The link ...
- 86.4k
1
vote
Accepted
OTN interface on router
by which actions, the abovementioned router support ITU-T G.709?
G.709 defines the interfaces for OTN. So, a supporting router would have one or more of those interfaces.
we can say the OSPF on the ...
- 86.4k
1
vote
Accepted
How does "bits per second" relate to wavelength?
such as 1GbE can be joined up together so that they share the same 10G wavelength
That is trying to say that you can combine multiple 1G links (at the data link layer) to a single 10G link so you'll ...
- 86.4k
1
vote
Accepted
Transponder, Muxponder and OTN vs Direct Optics
are "transponders" and "muxponders" terms that are exclusively bound with OTN?
No, the terms themselves are not exclusive to OTN and can be applied to DWDM concepts as well. ...
- 7,154
1
vote
Optical fibers out of service
Hopefully I'm understanding the question correctly. If you're asking if bad optics, or an optic shooting light thats too hot (high transmit dbm) can damage the core in the fiber cable itself; then no. ...
- 150
1
vote
Troubles wiring two network rooms with optical fiber and SFP-enabled switches
The first thing to do when troubleshooting is to check the physical layer. That will include things like making sure that you have installed to polarity correctly. For example, the fiber at position A ...
- 100k
1
vote
Accepted
Moving an Alcatel I-211M-L using Fiberoptic connection
It looks like it uses a normal SC/APC connector, so something like this should be working; WAN uses single mode almost exlusively, a green connector indicates Angled Physical Contact which is used ...
- 86.4k
1
vote
Can a single optical fiber support full-duplex communication?
Using wavelength-division multiplex, a single fiber can support many full-duplex channels.
There are 45 common channels for DWDM, 18 for CWDM - these overlap but you can easily run a dozen full-...
- 86.4k
1
vote
Can a single optical fiber support full-duplex communication?
Yes. Single Fiber, Single Wavelength, CWDM SFP Transceivers, some with Micro-OTDR Fast Fiber Fault Finder technology, have been commercially available for years.
- 21
1
vote
Need an estimate of the max power density
I think you'd be better off assuming these are not plastic/polymer since yellow = single mode = long haul = glass. See Plastic optical fiber
the IEEE has not yet passed any of the proposals into a ...
- 4,409
1
vote
Need an estimate of the max power density
If the manufacturer claims 300 mW power output, then why would you think the power rating is not reasonable? Unlike the mass market for UTP cables, where you see all kinds of crap sold, optical ...
- 100k
1
vote
Can I use an OM3 fiber optics cable on 1gb transceiver J4858C?
J4858C is a 1000BASE-SX transceiver. 1000BASE-SX is specified for 550 m reach over 500 MHz*km fiber (OM2). OM3 (1500 MHz*km) will probably go quite a bit further. So, yes you can!
- 86.4k
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