Otrans Communication Technologies (Hangzhou) Co.,Ltd.
Otrans Communication Technologies (Hangzhou) Co.,Ltd.

Fiber Optical Splitter: The Cornerstone of Optical Communication

Optical splitter, or fiber optic splitter, is a critical device in fiber optic communication systems that can distribute incident light to multiple output ports, or combine light from multiple input ports into a single output port. In fiber optic ODN networks, fiber optic splitters play a crucial role in signal distribution and convergence.


Fiber Splitter Types


Categorization by Transmission Medium


Single Mode Fiber Splitter


  • Single mode fiber splitters are optimized for single mode fibers and usually operate in the wavelength range of 1310nm and 1550nm.


  • Used in long-distance, high-bandwidth, fiber optic communications.

Multimode Fiber Splitter


  • Multimode fiber splitters are optimized for multimode fibers and typically operate in the 850nm and 1310nm range.


  • Used in short-distance, low-bandwidth applications, such as local area networks (LAN).

Categorization by Manufacturing Process


FBT Coupler Splitter


FBT coupler splitter is a traditional manufacturing process that achieves splitting by welding multiple fibers together from the side of the fiber.


Features of FBT splitters include:


  • Cost-effective: Due to the relatively simple manufacturing process, FBT splitters generally have lower manufacturing costs.


  • Customizable Splitting Ratio: The splitting ratio of FBT splitters can be customized according to specific needs to meet different application requirements.


  • Suitable for General Applications: FBT splitters are suitable for general optical ODN network applications, especially for medium and small-scale splitting needs.


PLC Splitter


PLC splitter utilizes planar lightwave circuit technology to achieve splitting through optical waveguides.


PLC splitters have multiple advantages, making them the preferred choice in optical ODN networks:


  • Wavelength Flexibility: PLC splitters can work across a wide range of wavelengths, typically covering the entire wavelength range from 1260nm to 1650nm. This flexibility makes them suitable for the transmission of optical signals at different wavelengths.


  • High Stability: With planar lightwave circuit technology, PLC splitters generally have high stability and reliability and are less susceptible to external environmental factors.


  • Low Insertion Loss: PLC splitters typically have low insertion loss, which can maximize the retention of optical signal strength.


  • Selectable Splitting Ratio: PLC splitters offer multiple splitting ratios to choose from, including 1:4, 1:8, 1:16, 1:32, 1:64, etc., to meet the splitting needs of different applications.


  • Low Failure Rate: Due to the use of highly integrated optical waveguide technology, PLC splitters generally have low failure rates, helping to improve network reliability.


  • Suitable for High-Density Applications: PLC splitters are suitable for applications requiring high splitting and complex connections, such as data centers and optical communication networks.

Fiber Optic Splitter: PLC Splitter Types


PLC splitter types include bare fiber splitter, no-block fiber splitter, ABS splitter, LGX splitter, and rack mount splitter.


Bare Fiber Splitter


  • Features: Bare fiber splitter does not have connectors at the end and requires additional fiber protection during installation.


  • Application: Commonly used in FTTH, PON, LAN, CATV, testing equipment, etc., especially in limited space environments.

No-Block Fiber Splitter


  • Features: Similar in appearance to the bare fiber splitter but with a more compact stainless steel tube package, providing stronger fiber protection.


  • Application: Mainly used in distribution boxes or on top of network cabinets for different connections, suitable for scenarios requiring better fiber protection.

ABS Module Fiber Splitter


  • Features: ABS splitter adopts plastic ABS casing, providing good protection for optical components and cables.


  • Application: Widely used in PON, FTTH, FTTX, GOPN network outdoor fiber distribution boxes suitable for various installation environments and requirements.

LGX Box Fiber Splitter


  • Features: LGX PLC splitter has a sturdy metal box and can be used independently or installed in a standard fiber patch panel or fiber chassis.


  • Application: Suitable for plug-and-play network integration, eliminating the need for fusion splicing or technician intervention, reducing installation risks.

Rack Mount Splitter


  • Features: 1U and 2U are the two available sizes of rack mount splitters, typically using the 19-inch rack unit standard.


  • Application: Widely used in EPON, GPON, FTTX, FTTH, and other high-density cabling environments, providing high-performance solutions for networks.

Below is a comparison summary of these five types of PLC splitters

Splitter TypeFeaturesApplication
Bare Fiber SplitterNo connectors at the ends, requiring additional fiber protection.FTTH, PON, LAN, CATV, testing equipment, space-limited environments.
No-Block Fiber SplitterSimilar appearance to bare fiber splitter but provides stronger fiber protection.Connections on top of distribution boxes or network cabinets, scenarios requiring better fiber protection.
ABS Module Fiber SplitterUses plastic ABS casing, providing good protection for optical components and cables.Outdoor fiber distribution boxes for PON, FTTH, FTTX, GOPN networks, suitable for various environments.
LGX Box Fiber SplitterHas a sturdy metal box, can be used independently or installed in standard fiber patch panels.Plug-and-play network integration, reducing installation risks, suitable for various scenarios.
Rack Mount SplitterAvailable in 1U and 2U sizes, using the 19-inch rack unit standard.EPON, GPON, FTTX, FTTH, high-density cabling environments, high-performance solutions.


Applications of Fiber Optic Splitters


Fiber optic splitters have wide applications in fiber optic communication systems. They can be used for optical signal distribution, convergence, and management. For example, fiber optic splitters can be used in fiber-to-the-home (FTTH) networks, distributing optical signals from a central site to multiple users. Additionally, fiber optic splitters can be used in long-distance transmission systems, data center networks, and optical network equipment.


Others include but are not limited to the following fields:


Fiber Optic Communication


In fiber optic communication systems, fiber optic splitters distribute optical signals from the sending end to different receiving ports, enabling multiplexing and distributed optical networks.


Spectral Analysis


Grating splitters are commonly used in spectral analysis instruments to separate different wavelengths of optical signals for spectral measurement and analysis.


Biomedical Applications


Fiber optic splitters are used in biomedical fields for optical sensing and imaging applications, such as biomolecule detection and cell imaging.


Optical Switching


Digital optical circuit splitters are used in optical networks for optical switching, enabling real-time routing and management of optical signals.


In summary, fiber optic splitters are critical devices in fiber optic communication ODN network systems, capable of achieving optical signal splitting and combining, and play a crucial role in signal distribution and convergence. The types of fiber optic splitters are diverse, including wavelength-based, power-based, and mode-based fiber optic splitters, which can meet different system requirements. When selecting an fiber optical splitter, factors such as split ratio, insertion loss, isolation, operating wavelength, price, and quality need to be considered to ensure the performance and reliability of the fiber optical splitter.

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