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 ...
Ron Maupin's user avatar
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7 votes
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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 ...
Zac67's user avatar
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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 ...
Mark Twain's user avatar
4 votes
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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-...
Zac67's user avatar
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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 ...
Zac67's user avatar
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3 votes
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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 ...
Zac67's user avatar
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3 votes
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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 ...
Zac67's user avatar
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3 votes
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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 ...
user7641's user avatar
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. ...
Golgot's user avatar
  • 427
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
erratic's user avatar
  • 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 ...
John Dwan's user avatar
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 ...
Joey Miller's user avatar
2 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 ...
Peter Green's user avatar
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2 votes
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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 ...
Zac67's user avatar
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2 votes
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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. ...
Zac67's user avatar
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2 votes
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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 ...
Jordan Head's user avatar
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2 votes
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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 ...
Ron Maupin's user avatar
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2 votes
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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 ...
Zac67's user avatar
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1 vote
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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 ...
Zac67's user avatar
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1 vote
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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 ...
Zac67's user avatar
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1 vote
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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. ...
Jordan Head's user avatar
  • 7,099
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 ...
Ron Maupin's user avatar
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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. ...
DragonFist616's user avatar
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 ...
Zac67's user avatar
  • 84.4k
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-...
Zac67's user avatar
  • 84.4k
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.
ZonuSAM's user avatar
  • 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 ...
Ronnie Royston's user avatar
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 ...
Ron Maupin's user avatar
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1 vote

Cisco Digital Optical Monitoring Command

You will need the part number to determine SFP compatibility. This is from Digital Optical Monitoring - DOM, which has a link to the compatibility matrix: DOM Support on Cisco Transeivers Not ...
Ron Maupin's user avatar
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