Passive fibre optical components
Found in a wide range of applications including telecom/datacom networks, aerospace, defence, and LiDAR and sensors, and medical.
Our core components include fused optics, WDM filters, collimators and hybrids.
Meeting key specification requirements such as optimised bandwidth, low losses, wide temperature performance, and excellent environmental and mechanical stability is crucial for delivering custom solutions. Our specialist partners bring years of experience in providing on-demand engineering support for highly customised modules and systems.
Standard and custom products include panels/racks, splitters/couplers, multiplexers/demultiplexers, isolators/circulators, switches, collimators, PM products, and attenuators/patch cords.
Our passive fibre optic solutions are cost-effective yet focused on delivering on exact performance requirements. Our passive components’ flexibility in configuration of key parameters have been proven as industry-leading, with many customers depending on our expertise to guide them through this maze of innovation.

FAQ: passive fibre optic components in modern networks
FAQs about passive fibre optic components
Passive fibre optic components are essential building blocks in modern optical networks. Unlike active devices, they typically operate without electrical power, making high reliability and low maintenance key elements of their performance. These components guide, split, or combine optical signals with high-precision, with compliance to telecom, data center, and FTTH standards and applications. Through increased use of passive solutions, such as in PON networks, energy consumption can be significantly reduced.
The most popular passive components include fibre optic splitters, couplers, pigtails, collimators, attenuators, and wavelength division multiplexers (WDMs). Each plays a critical role in optimizing signal distribution and network performance. For example, splitters enable efficient signal sharing in FTTH-PON networks, while WDMs maximize bandwidth of existing fibre installations. Choosing high-quality components ensures long-term performance with minimal signal loss.
A splitter divides a single optical signal into multiple outputs, making it perfect for distributing signals uniformly to multiple endpoints in FTTH or CATV systems. A coupler can combine or split signals bidirectionally and disproportionally and is often used for monitoring or signal sharing in complex network environments. Acal BFi offers a range of premium splitters and couplers that guarantee low insertion loss and high uniformity, ensuring consistent performance across all channels or ports.
Optical attenuators are designed to reduce the power level of an optical signal, preventing overload on sensitive receiving equipment and balancing signal strength across a communication network. This is crucial for maintaining optimal performance where a broad range of systems, standards and components come together. High-quality attenuators offer precise control through consistent attenuation values and excellent return loss, ensuring networks operate efficiently without any signal distortion or communication loss.
Wavelength Division Multiplexing (WDM) technology allows multiple signals to travel simultaneously on a single fibre through use of different wavelengths. This dramatically increases bandwidth of existing installed fibres and reduces infrastructure costs in the long-term. Investing in premium WDM components ensures low insertion loss, high isolation, and superior thermal stability, enabling your network to handle growing data demands without unnecessary costly downtime or reconfiguration engineering man-hours.
Most passive components are specifically designed for single mode, multi-mode or polarisation maintaining fibres and compatibility depends on specifications like core size, bandwidth and operating wavelength. Acal BFi provide components tailored for various fibre types, configurations and connectorisation options ensuring seamless integration into any new or existing network. Choosing the right product specification early on guarantees optimal performance and minimizes installation challenges.
Selecting the right splitter involves considering the split ratio (e.g., 1×4, 1×8, 1×16, 1×32 etc.), operating wavelength, insertion loss, and technology type—PLC (Planar Lightwave Circuit) or FBT (Fused Biconical Taper). PLC splitters offer superior uniformity and reliability for large-scale deployments, while FBT splitters are cost-effective for smaller networks. Allow Acal BFi to help you make the right choice of the technology for your splitter requirements ensuring consistent optical performance and long-term reliability.
Insertion loss specifies the amount of signal power lost when passing through a component. Lower insertion loss means improved signal quality and higher network efficiency. Premium passive components from Acal BFi are engineered to minimize insertion loss, ensuring your network delivers maximum performance even over long distances and multiple connection points resulting in fewer communication errors and improved network stability.
Passive components require minimal maintenance compared to active devices, making them a cost-effective choice for long-term deployments. Occasional cleaning of connectors and periodic inspection for physical damage are recommended to maintain peak performance. Investing in high-quality components from Acal BFi that are built to withstand harsh environments will reduce downtime and resulting costs saving you money in future.
Passive fibre optic components are widely used in telecom networks, data centers, FTTH (Fibre to the Home), PON (Passive Optical Networks), CATV systems, and industrial applications. They provide the backbone to any network allowing high-speed, high-density, reliable connectivity in commercial and industrial installations. By choosing trusted brands from Acal BFi, you ensure your network is future-proof, scalable, and capable of handling increasing data bandwidth demands.









