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FBT Coupler Splitters – Cost‑Effective Optical Splitting for Low‑Channel Applications
High-quality FBT coupler splitters – 1×2, 1×3, 1×4, 1×8, 2×2, single/dual-window, bare fiber/steel tube/ABS box packaging. Low insertion loss, G.652D/G.657A fiber, UPC/APC connectors. Factory-tested with test reports. OEM/ODM available.
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1×2 FBT Fiber Optic Splitter – Single‑mode Bare Fiber G652D/G657A12 fused biconical taper (FBT) optical splitter for single‑mode G652D/G657A. Bare fiber termination, low insertion loss,...View Details
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What is FBT Coupler Splitter?
An FBT coupler splitter (Fused Biconical Taper coupler splitter) is a passive optical device that splits or combines optical signals by fusing and tapering two or more optical fibers together under precise heating and stretching. This manufacturing process creates a tapered coupling region where light transfers between fibers, enabling cost‑effective signal splitting and combining for a wide range of network applications. Unlike PLC splitters which use semiconductor waveguide technology, FBT splitters are particularly well‑suited for low‑channel‑count applications (1×2, 1×4, 2×2, etc.) where cost efficiency and customization are priorities. YRTFIBER offers a full range of FBT coupler splitters in various splitting ratios, wavelength options, and packaging formats to meet diverse network requirements.
FBT Coupler Splitter Types
Standard FBT Splitter – Basic fused biconical taper splitter available in 1×2, 1×4, 2×2, and other low‑count configurations. Ideal for general‑purpose signal splitting in telecom and CATV networks.
Wavelength‑Selective FBT Coupler – Designed for specific operating wavelengths (1310nm, 1550nm, or dual‑window). Suitable for WDM applications and wavelength‑specific signal routing.
Wideband FBT Coupler – Optimized for broad wavelength operation (1260nm – 1650nm), providing consistent performance across the full telecom band.
Package Options – Available in bare fiber, steel tube, ABS box, and rack‑mount cassette formats to suit different installation environments.
Custom FBT Couplers – Any splitting ratio, wavelength, fiber type, connector type, and packaging available upon request. OEM/ODM welcome.
Key Specifications
Splitting ratios: 1×2, 1×3, 1×4, 1×8, 2×2, and other custom configurations
Fiber types: G.652D (singlemode), G.657A (bend‑insensitive), multimode on request
Operating wavelengths: 1310nm, 1550nm, dual‑window (1310/1550nm), or wideband (1260nm – 1650nm)
Insertion loss (typical): ≤ 3.8 dB (1×2, 50/50 split), ≤ 7.2 dB (1×4, 25/25/25/25 split)
Uniformity: ≤ 0.8 dB
Return loss: ≥ 50 dB (UPC) / ≥ 55 dB (APC)
PDL (Polarization Dependent Loss): ≤ 0.15 dB
Operating temperature: -40 to 85°C
Package options: Bare fiber, steel tube, ABS box, LGX cassette, rack‑mount
Connector options: LC, SC, FC, ST (UPC or APC polish), or bare pigtails
Typical Applications
Telecom and CATV signal distribution
FTTH/FTTx access networks
Optical monitoring and test systems
WDM (Wavelength Division Multiplexing) systems
Sensor and instrumentation networks
Why Choose YRTFIBER?
15+ years of experience, 4M+ fiber‑km annual capacity
Precision fusion tapering technology with low insertion loss
100% factory tested – each coupler comes with IL/RL test reports
Virgin Corning / Yangtze compatible fiber
Factory pricing – 10–20% more competitive
7–15 working days lead time
3‑year warranty + free engineering support
OEM/ODM available – custom ratios, wavelengths, packaging, and connectors
Ordering Process
Inquiry with splitting ratio, wavelength, fiber type, connector type (if required), packaging type, quantity
Quote within 24 h (proforma invoice + lead time + freight)
30% deposit + confirm connector / marking details
Production with in‑process photos/videos
FAT + balance – IL/RL test reports reviewed before shipment
Shipping and after‑sales support
Certifications & Standards
ISO 9001 / ISO 14001
ITU‑T G.652D, G.657A
Telcordia GR‑1209 / GR‑1221
RoHS, REACH, CE
UL / CPR on request
Packaging & Shipping
Individual PE bags or ESD‑safe packaging with protective caps
Clear labeling with splitting ratio, wavelength, fiber type, connector, and test data
Carton packaging for safe transport
Customized packaging available for OEM orders
Frequently Asked Questions
FBT vs PLC splitter – what's the difference? FBT splitters use fused fiber tapering technology, which is more cost‑effective for low split ratios (1×2, 1×4) and offers flexible customization. PLC splitters use semiconductor waveguide technology, providing better uniformity and performance for high‑channel‑count applications (1×8 to 1×64).
What splitting ratio should I choose? Common ratios include 50/50, 40/60, 30/70, 20/80, 10/90 for 1×2 splitters, and equal splits for 1×3, 1×4, and 1×8. The choice depends on your network's power budget and distribution requirements.
Single‑window or dual‑window? Single‑window couplers are optimized for either 1310nm or 1550nm, offering lower insertion loss. Dual‑window couplers support both wavelengths, providing flexibility in mixed‑wavelength networks.
Bare fiber, steel tube, or ABS box – which packaging is best? Bare fiber is for integration into custom enclosures; steel tube offers basic mechanical protection; ABS box provides durable environmental sealing and cable management for FTTH distribution.
UPC or APC connector? APC (angled) offers lower return loss and is preferred for analog video and high‑precision applications; UPC is standard for most digital networks.
MOQ? From 10 pieces; best pricing from 500 pieces.
Warranty? 3‑year on materials and workmanship.
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