20201013124705-fiber-optic.md

title	Fiber-optic Cabling and Connectors
date	2020-10-13 05:47:05 -0700
tags	networking

Transmits light rather than electricity. Can transmit data long distances and in high EMI areas. Can sometimes operate up to tens of kilometers.

Optical fiber

Four components

1. glass fiber, or core
2. cladding, reflects light
3. buffer (gives strength)
4. insulating jacket

Types

Can be single or duplex, one wire sends one wire receives.

Multi-mode optical fiber (MMF)

• Uses LEDs. Most common type.
• Almost all transfer 850-nm wavelengths.

Single-mode optical fiber (SMF)

• Uses laser light. Prevents modal distortion.
• Transmit either 1310 nm or 1550 nm.

Optical fiber connectors

• ST: Straight Tip
• SC: Standard Connector
• LC: Lucent Connector
• MT-RJ: Mechanical Transfer Registered Jack Media Termination - recommended jack