FBT Coupler Splitter

Fiber FBT Coupler Splitter in Different Wavelengths & Split Ratio Can be Customitzed from Fibermart!

FBT Coupler Splitter is used to split the fiber optic light into several parts at a certain ratio. It is an important component used in Lab Testing or Optical Network, therefore also called FBT Splitter, Fiber Coupler. There are mainly two kinds of FBT Fiber splitters: one is the fused type splitter known as FBT Coupler or FBT splitter, which features competitive price with customized split ratio with higher power; the other is the PLC Splitter based on the PLC (Planar Lightwave Circuit) technology. FiberMart provides both PLC splitters and FBT coupler splitters, including 1x2 Fiber Coupler and 1x2 Fiber Splitter, for Lab Research and Fiber Optic Testing or Special Optical Networks.

Introduction

Fibermart FBT (Fused Biconical Taper) Coupler Splitter is a fundamental passive optical device designed to distribute optical power from a single input fiber to multiple output fibers at a specified ratio. Engineered for critical light management within optical networks, it serves as a reliable and cost-effective solution for signal splitting in wavelength-sensitive applications. Available in a wide range of wavelengths, split configurations, and packaging options, this traditional fused-type splitter is optimized for performance in passive optical networks (PON) and various telecommunication systems, providing a versatile backbone for signal distribution.

Features

● Wide Operating Wavelength Range covering major bands including 850nm, 1310nm and 1550nm with ±30nm(Band Width).

● Multiple Split Ratios available from 1x2 to 1xN configurations, with common splits such as 50:50, 25:75, 90:10, 99:1 and custom ratios.

● 100% Tested with individual Testing Report, Low Insertion Loss & High Directivity ensuring efficient power distribution and minimal back reflection.

● Cost-Effective FBT Technology offering a reliable alternative to PLC-based splitters for specific channel counts.

● Compact Packaging Options including bare fiber, module box, LGX box, and rack-mount versions for diverse installations.

● Excellent Environmental Stability with CE, RoHS, FCC, ISO9001 certificates, proven performance across temperature variations and mechanical stress.

● Customizable Designs for specific wavelengths, fiber type (SM/MM), INPUT/OUTPUT pigtail length and jackets, connector type requirements.

Principles

The FBT Coupler Splitter operates on the principle of the fused biconical taper process. Two or more optical fibers are twisted together, heated, and stretched under precise control. This fusion creates a coupling region where light from the input fiber core transfers evanescently into the adjacent fiber(s). The specific splitting ratio is determined by the length of the fused region and the degree of taper. This manufacturing process allows for selective coupling across broad or specific wavelength windows, making FBT splitters highly effective for broadband applications and basic wavelength division multiplexing (WDM).

Applications

● Passive Optical Network (PON) deployments for FTTH, FTTx, and CATV signal distribution.

● Optical Power Monitoring and Tapping in network test and measurement setups.

● Signal Splitting in Local Area Networks (LAN) and cable television (CATV) systems.

● Optical Sensor Systems and biomedical instrumentation requiring precise light division.

● Fiber Optic Amplifier and DWDM Systems for pump light combining and power management.

Specifications