1 / 33

Fiber Optic Hardware

Fiber Optic Hardware. Ch 7 Fiber Optics Technician’s Manual, 3 rd . Ed Jim Hayes. Hardware. Hardware protects and organizes cable, splices, and termination points Premises Hardware – indoor Outside plant Hardware – outdoor. Premises Cabling. TIA Standards 2000 feet max. backbone wiring

binh
Download Presentation

Fiber Optic Hardware

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Fiber Optic Hardware Ch 7 Fiber Optics Technician’s Manual, 3rd. Ed Jim Hayes

  2. Hardware • Hardware protects and organizes cable, splices, and termination points • Premises Hardware – indoor • Outside plant Hardware – outdoor

  3. Premises Cabling • TIA Standards • 2000 feet max. backbone wiring • Based on telco wiring standards • Image adapted from siemon.com (link Ch 7a)

  4. Backbone Cabling(another diagram) • Three connector pairs to get from outside to the desktop • Main Cross-Connect • Intermediate Cross-Connect • Telco Closet

  5. Main Cross-Connect (MC) • Should be near the data center (for LANs) or the PBX (for telephones) • PBX: Private Branch Exchange; i.e., the campus switchboard

  6. MC equipment should: • Handle enough fibers for all transmission needs • Accept: • Direct termination • Pigtail splices • Preterminated assemblies (see next slide) • Provide jumper storage and reconfiguration • Allow for growth

  7. Preterminated Assemblies (Plug & Play) • Preterminated cable • With SC or other connectors in a special sock for pulling, or • MTP ribbon cable connectors (12 fibers in a single SC-size plug) that plugs into a preconnectorized patch panel • Pictures from Corning (link Ch 7b & 7c)

  8. Intermediate Cross-Connect • Connects interbuilding cable plant to intrabuilding cable plant • May be wall-mounted • Image from apacn.com • link Ch 7e

  9. Telecom Closet • Transition from backbone to horizontal cable plant • Images from comnews.com and icc.com (links Ch 7f & 7j)

  10. Homerun Cabling • This simpler, centralized network design is cheaper and popular • It works because fiber carries data over a long distance with passive links

  11. Homerun Cabling(another diagram) • Home-run Cabling • All the cables originate from a single distribution enclosure • Also known as star topology • Links Ch 7n, 7o

  12. Hardware for Distribution Points • Splice panel • Patch panel • Wall outlet • Conduit and innerduct

  13. Splice Panel • Holds and protects splices in one or more splice trays • Images from aflfiber.com, siemon.com, and Corning (links Ch 7f, 7g, 7h)

  14. Patch Panel • Provides a centralized location for connecting fibers, testing, monitoring, and restoring riser or trunk cables • Requires short patch cords • Images from aflfiber.com and Corning (links Ch 7f, 7i)

  15. Wall Outlets • Terminates permanent wiring • Provides a connection for a jumper cable to equipment • Image from icc.com (links Ch 7j)

  16. Outside Plant Hardware • Splice Closures • Conduit or innerduct • No connectors are usually used outdoors – only splices

  17. Splice Closures • Protect splices from water and the elements • Inline • Image from pacificinterco.com (link Ch 7k)

  18. Dome-type Splice Closure • Image from pacificinterco.com (link Ch 7k)

  19. Conduit and Innerduct • Cable is installed in conduit • Large conduits may have several innerducts inside them • Images from glenair.com and fpnmag.com links Ch 7l and 4q)

  20. Cable Installed into Pavement • MCS Road Cable is designed to be inserted directly into a slit cut into pavement • This makes installation convenient – you don’t have to block traffic much • Image from Corning & CENIC, from link Ch 7m

  21. Ch 8: Getting Started in Fiber Optics

  22. Outside Plant • All singlemode fiber • High fiber counts, up to 288 or more • Cable reels are fusion spliced together for long distances • Preconnectorized pigtails are spliced onto the ends of the cables • Every fiber is tested with an OTDR (Optical Time Domain Reflectometer) • Very expensive equipment needed

  23. Premises Cabling • Short lengths, fewer fibers per cable • Multimode fiber • Splicing is rare • Connectors and patch cords are used for flexibility • Installer often also installs power and copper LAN cables • Equipment is much cheaper

  24. The Installers • Outside Plant installers work for telephone companies or other large corporations • Inside Plant installers are often independent contractors

  25. Training • Go to an FOA-approved school • Get the FOA certification • CFOT or Certified Fiber Optic Technician (basic) • CFOS or Certified Fiber Optic Specialist (advanced) • CFxT (Certified FTTx Technician) (new, see link Ch 8c)

  26. Tools and Test Equipment • You will need the basic tools, as found in our tool kits, including a microscope • And a power meter • If you do outside plant work, you will need a fusion splicer and OTDR

  27. Keeping Up To Date • Like all other high-tech, fiber optics changes rapidly • You will have to constantly learn new things • LAN administrators typically spend 10 hours per week studying new technology

  28. Entering the Market • Start slowly • Get a small job and do it carefully • Promote your services and grow

  29. Promoting and Selling Fiber Optic Services • Make a brochure and Web site • Take photographs of your work • Give references of previous customers • Ask your suppliers to recommend you to customers

  30. Overseeing Fiber Installations • Supervisors must know how to install fiber correctly • Make sure cables are pulled and terminated correctly • Workmanship should meet standards • NECA/FOA 301-2004, Standard for Installing and Testing Fiber Optic Cables (ANSI) (see link Ch 6d) • Test every fiber in every cable for loss • Document every fiber

  31. Plan for Inspection • Before bidding on a job, make sure you know who the inspector will be and what will be required • Usually the person who hired you will be inspecting, or someone at their company • Local interpretations of fire codes and other regulations vary!

  32. Pricing Fiber Installations • Request for Proposal • Gives you general description of a project • You must design, schedule, and price the job • Calculate real cost, add overhead and some extra for contingencies

  33. Last modified 10-6-08

More Related