Optical splitter model specifications

Optical splitters are passive devices that divide a single optical signal into multiple outputs, with models varying by split ratio, architecture, and technology type.Types of Optical Splitters1. Fused Biconical Taper (FBT) Splitters:Low-cost and simple design, ideal for small splits such as 1:2 or 1:4.Power distribution may vary slightly between outputs.Commonly used in smaller-scale PON deployments . 2. Planar Lightwave Circuit (PLC) Splitters:Highly uniform power distribution, suitable for large splits like 1:32 or 1:64.Compact and reliable, preferred for large-scale FTTH networks.Polarization and wavelength-independent, supporting the full telecom wavelength range .Split RatiosSplit ratio defines how many outputs a splitter has and how the input power is divided.Common ratios: 1:2, 1:4, 1:8, 1:16, 1:32, 1:64.Odd ratios like 1:3 or 1:5 are occasionally used.Each doubling of the split ratio reduces output power by roughly 3 dB .Deployment Architectures1. Centralized Splitting:Splitters are located at a central office or cabinet.Allows flexible customer-to-splitter assignment via jumpers.Simplifies maintenance and network reconfiguration . 2. Distributed Splitting:Splitters are placed in closures or pedestals closer to end users.Customer assignments are fixed once installed.Reduces fiber usage but limits flexibility .Modeling Optical SplittersOptical splitters can be modeled in simulation software like Ansys Optics.Sequential Mode: Requires separate configurations for transmitted and reflected paths.Non-Sequential Mode: Allows simultaneous tracing of multiple ray paths, useful for complex splitter designs.Modeling accounts for polarization, thin-film coatings, and power distribution to ensure accurate simulation of splitter performance .ApplicationsUsed in Passive Optical Networks (PONs) to connect a single Optical Line Terminal (OLT) to multiple Optical Network Terminals (ONTs).Enable cost-efficient FTTH deployment by sharing a single fiber among multiple subscribers.Passive operation means no power is required, reducing operational costs .SummaryOptical splitter models vary by technology (FBT vs PLC), split ratio, and deployment architecture (centralized vs distributed). Choosing the right model depends on network scale, desired power uniformity, and flexibility requirements. For simulation or design, software modeling ensures accurate performance prediction before deployment.