High-Frequency Traders Push Closer to Light Speed With Cutting-Edge Cables

Wouldn't the bits with likely vacuum in the cable have to be 100% straight so it gets to the next glass core bit to go around a bend ??

Or it it bouncing down the walls of the cable, which would surely take longer than a direct route ??
 
That is nonsense. Charts are not magic.they have worked under IB for years without issues for me. I don't look at charts much and especially don't use any of the drawing tools or other chart porn. So, this is either a coding bug that sneaked into one of the more recent versions or something else...


RedDuke said:
you need to understand that IB strength is no charts. They are actually
Quite weak. They not gonna change it. I advised earlier remedy via NinjaTrader
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You don't even understand the utility of facial masks. How are you gonna comprehend how light travels?

Turveyd said:
Wouldn't the bits with likely vacuum in the cable have to be 100% straight so it gets to the next glass core bit to go around a bend ??

Or it it bouncing down the walls of the cable, which would surely take longer than a direct route ??
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DiceAreCast said:
You don't even understand the utility of facial masks. How are you gonna comprehend how light travels?
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Photon's, travel fastest in a vacuum and a straight line, so I understand how light travels the same as I understand, bits of crap clothe aren't masks, N95's are masks, anything less is pretty much BS.

Maybe bouncing around the sides in a vacuum is still faster than travelling through glass ??
 
BS News for ignorant. Fiber has no advantage in latency department, it's the other way around. High bandwidth is its advantage. It is like a 50-ton mining truck vs Corvette. Can move a lot, but no 0-100 records for sure.
 
apdxyk said:
BS News for ignorant. Fiber has no advantage in latency department, it's the other way around. High bandwidth is its advantage. It is like a 50-ton mining truck vs Corvette. Can move a lot, but no 0-100 records for sure.
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These papers discuss the reduction in latency:
https://www.laserfocusworld.com/fib...wcore-optical-fibers-may-have-a-bright-future

Nested antiresonant nodeless hollow core fiber:
https://www.osapublishing.org/Direc...2-20-23807.pdf?da=1&id=301570&seq=0&mobile=no

In particular:
Instead of aiming at the usual goal of highest possible bandwidth, OFS optimized their demonstration for applications such as high-frequency trading willing to pay a steep premium for low latency. Microseconds mean money in that market, and hollow-core fiber cuts 1.54 µs/km of distance. Low latency matters more than high data volume, so OFS transmitted nonreturn signals at 10 Gbit/s on 33 DWDM channels through 3.1 km of cabled hollow-core fiber to a direct-detection receiver. Forward error correction and digital signal processing would have allowed coherent transmission at much higher data rates, but would have added 5.6 to 9 µs in latency. Zhu reported the low-speed transmission kept bit error rates below 10-15.
 
Error correction and integrity checking is actually not of importance in this space, nobody uses TCP or similar protocols for the same reason. So I think their point you cited makes sense. It's primarily if not exclusively used for market data submission not for order data. Interesting technology, I also keep up with this space as it interests me and I like to know how I get fleeced day in day out :D

def said:
These papers discuss the reduction in latency:
https://www.laserfocusworld.com/fib...wcore-optical-fibers-may-have-a-bright-future

Nested antiresonant nodeless hollow core fiber:
https://www.osapublishing.org/Direc...2-20-23807.pdf?da=1&id=301570&seq=0&mobile=no

In particular:
Instead of aiming at the usual goal of highest possible bandwidth, OFS optimized their demonstration for applications such as high-frequency trading willing to pay a steep premium for low latency. Microseconds mean money in that market, and hollow-core fiber cuts 1.54 µs/km of distance. Low latency matters more than high data volume, so OFS transmitted nonreturn signals at 10 Gbit/s on 33 DWDM channels through 3.1 km of cabled hollow-core fiber to a direct-detection receiver. Forward error correction and digital signal processing would have allowed coherent transmission at much higher data rates, but would have added 5.6 to 9 µs in latency. Zhu reported the low-speed transmission kept bit error rates below 10-15.
More...
 
Firstly, coefficient or index of refraction is not in your favour with fiber. That is the fundamental variable they need to solve. With the advances in modern material science it will happen one day. Not tomorrow. Too many variables on top of that, e.g.
  • opto-electrical conversion,
  • switching and routing,
  • signal regeneration,
  • amplification,
  • chromatic dispersion (CD) compensation,
  • polarization mode dispersion (PMD) compensation,
  • data packing, digital signal processing (DSP),
  • protocols and addition forward error correction (FEC)
 
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