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Add: No.101 B.S. Industrial Zone, Wangniudun Town, Dongguan City, Guangdong, China
Tel: +86-769-81209595
Mob: +8613242086178 (WeChat or Whatsapp)
E-mail: milton@hgcable.cc
Helen Golden: helen@hgcable.cc

Multimode Fiber Optic Cable

Since each intermediate assist method uses a sub-duct system that is discontinuous at each assist manhole, each discontinuous duct segment needs to be lubricated independently
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1-288 cores  GYTA Armoured Optical Fiber Cable

Central strength member

1.8mm Steel

Outer diameter

Vary from 7 to 14mm

Application

Aerial ,duct, pipeline, underground

Cores available

2,4,6,8,12,24,36,48,72,96,144,288

Cores type

G652D,G657A,G655C

Attenuation @1310nm

 ≤0.36dB/km

Attenuation @1550nm

 ≤0.22dB/km

OEM/ODM

Yes

Package

1/2/3/4/5km km each exporting wooden drums

Cover

PE,HDPE

GYTA fiber cable2

Learn more about fiber optic cable:

Since each intermediate assist method uses a sub-duct system that is discontinuous at each assist manhole, each discontinuous duct segment needs to be lubricated independently, i.e., they need to have lubrication applied ahead of the cable, and then on the cable as it passes through the intermediate assist manhole or figure-eight manhole that leads into the next duct segment. Each placing winch or engine used in an intermediate assist procedure needs to be adjusted with the mechanical limitations determined for the cable being placed, i.e., maximum compression and tensile force.

7.2 Bidirectional Figure-Eight Procedure

If necessary, a placing plan listing the pulling locations, intermediate assist, and figure-8 locations should be developed during the pre-survey of the placing project. The placing plan will indicate the length of cable to be coiled at the “figure-8" location. For bidirectional placing, a convenient intermediate manhole is selected for the figure-8 location. It should be near mid-span and, if possible the duct section in both directions out from the figure-8 manhole should be placeable in a single operation. Figure 9- Cable Pulling Showing Cable Placement with Intermediate Figure-8 Feed

Segment 1 of the cable placing operation requires pulling cable from the cable feed manhole to the figure-eight manhole. The placing winch must be positioned at the figure-eight manhole for this operation.

Cable is pulled or jetted to the intermediate figure-eight manhole following the procedures outlined in Figure 9. All cable is pulled off the reel with the excess cable figure eighted in a coil about 10 meters long at the intermediate figure-eight manhole. Care is required to avoid damaging the cable as the excess cable is pulled out of and, in the next step, back into the intermediate manhole. During this operation, a significant length of cable is being pulled around a capstan winch, so care must be taken to avoid over bending the cable. In addition, the manhole must be rigged to provide a gentile passage for the cable out, then back into the manhole and duct system. The figure-eighting of the cable shall be done carefully, in a safe location free from access by the public.

The "pushing fiber deeper" approach became known as hybrid fiber/coax (HFC), which, with its ability to shrink serving-area sizes, began to make it appear that the telcos' FTTH/C plans would permit the MSOs to carry data (albeit on a shared medium). This would crowd into the telcos' vision and could lead to competition in the new segment. Meanwhile, technical advances in data compression reduced the information needed to carry video by nearly two orders of magnitude, and new modems with a variety of digital subscriber line (xDSL) formats were developed to carry data and video over copper pairs.

Finally, user-friendly graphical interfaces made Web traffic explode, launching the dot-com boom and competitive local-exchange carrier (CLEC) threats. Technical advances also made satellite TV a credible threat to cable, and wireless phones a threat to land lines.

Thus, technical progress and regulatory relaxations set the stage for that middle area to be actively contested, while putting pressure on each market.

So, what does the future hold?

Overriding all of the plans, of course, is the need for the network to make money for its owner: Early advocates estimated that the customer's willingness to pay for phone and VOD services would support a cost of $1,500 per subscriber for infrastructure, which is still a reasonable guess today. Activity in forums and standards groups such as the full-service access network (FSAN) and Ethernet-in-the-first-mile (EFM) activities support the vision, and vendors are within striking range of that cost. Furthermore, several large trials, dating back to the 1980s, have already been run by ILECs, and some MSO trials have recently begun, so the players are developing the requisite technological experience.

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  • Contact Us

    Add: No.101 B.S. Industrial Zone, Wangniudun Town, Dongguan City, Guangdong, China
    Tel: +86-769-81209595
    Mob: +8613242086178 (WeChat or Whatsapp)
    E-mail: milton@hgcable.cc
    Helen Golden: helen@hgcable.cc

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