RISINGSUN outdoor Fiber optic cable GYXTY, 2~12 fibers, jelly filled and fiber contained central loose tube, two parallel steel wires 1. Suitable for duct or aerial application. Tubes contain optical fibers colour coded as per color coding scheme. Fiber Optic Cable GYXTY, Coaxial Cable RG6/U, Network LAN Cable Cat5e, GYXTY Gysty Gystc8y, UTP FTP SFTP Cat5e CAT6, Dual / Quad / Tri-Shield / Messenger, RG6 Rg58 Rg59 Rg11m Rg174, Composite Cable Cat5e+ Power Cable + Rg59, 8/16cores Bt3002, Optical Fiber Cable FTTH ADSS Basic Info. This small diameter core, typically around 9 microns in diameter, allows only one mode of light to pass through, resulting in a narrower beam of light. Single-mode fiber optic cable (SMF) is a type of optical fiber designed to carry a single ray of light mode directly down the fiber core.