Classification Diagram of Telecommunication Fiber Optic Patch Cords
Fiber optic patch cords are classified by fiber type, connector type, strand configuration, and polishing method, each suited for specific telecommunication applications.1. Classification by Fiber TypeSingle-Mode Fiber (SM): Designed for long-distance transmission with minimal signal loss. Common variants include OS1 and OS2, typically with a yellow jacket and 9 µm core diameter .Multimode Fiber (MM): Used for shorter distances, supporting multiple light modes. Variants include OM1 (orange), OM2 (orange), OM3 (aqua), OM4 (violet), and OM5 (lime green), with larger core diameters (50–62.5 µm) for higher bandwidth over short distances .2. Classification by Connector TypeSC (Subscriber Connector): Rectangular, plug-and-pull type, widely used in PON and GBIC modules .LC (Lucent Connector): Smaller than SC, uses a latch mechanism, ideal for high-density applications and SFP modules .FC (Ferrule Connector): Metal sleeve with turnbuckle fastening, commonly used on ODF sides for telecom networks .ST (Straight Tip): Round shell with turnbuckle, often used in multimode networks and fiber distribution frames .MPO/MTP: Multi-fiber connectors for high-density applications, often used in data centers .Other types: MT-RJ, MU, E2000, DIN, each with specific applications and mechanical designs .3. Classification by Strand ConfigurationSimplex: Single fiber, one-way transmission, suitable for unidirectional links .Duplex: Two fibers, bidirectional transmission (Tx/Rx), commonly used in Ethernet and PON networks .4. Classification by Polishing TypePC (Physical Contact): Standard flat polish, widely used in telecom equipment .UPC (Ultra Physical Contact): Lower insertion loss than PC, commonly used in high-performance networks .APC (Angled Physical Contact): Angled end-face to reduce back reflection, often green-colored connectors for FTTH and high-precision applications .5. Classification by Application and EnvironmentIndoor vs Outdoor: Indoor cords often use PVC or LSZH jackets; outdoor cords may be armored or waterproof for FTTA and ODN networks .Data Center / High-Density: Uniboot or MPO/MTP patch cords for space-saving and high-bandwidth requirements .FTTH / CATV: SC or LC connectors with bend-insensitive fibers (G.657A1/A2) for tight spaces . This classification framework ensures that the correct fiber optic patch cord is selected based on distance, bandwidth, connector compatibility, and environmental requirements, providing reliable connectivity in telecommunication networks.