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Spectrum Splitter Specifications Table

Spectrum Splitter Specifications Table

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Spectrum splitters, including PLC, FBT, and dichroic types, are characterized by insertion loss, PDL, wavelength range, split ratios, and environmental tolerances.

Key Specifications of Spectrum Splitters

ParameterPLC SplitterFBT SplitterDichroic Beam Splitter
Split Ratio1x2 to 1x128, symmetrical or asymmetricalTypically 1:2 (10/90% uneven distribution)N/A (wavelength-based reflection/transmission)
Insertion Loss (Max.)1x12: 12.5 dB, 1x16: 13.8 dB, 1x32: 17.0 dB, 1x64: 20.5 dBVaries by ratio; 1:2 uneven splitDepends on wavelength; e.g., long-pass cut-on 700 nm
Uniformity (Max.)1x12: 1.1 dB, 1x16: 1.2 dB, 1x32: 1.3 dB, 1x64: 2.0 dBN/ANarrow spectral tolerance with defined transition zone
Polarization Dependent Loss (PDL)≤0.2–0.3 dBN/AN/A
Operating Wavelength1260–1650 nmTypically telecom wavelengths (1310/1550 nm)Short-wave or long-wave ranges, e.g., 400–700 nm or 700–1100 nm
Operating Temperature-40°C to 85°CStandard telecom rangeUp to 200°C (depending on coating)
Housing / PackagingCompact housing for splice trays, wall-mounted boxes, optical distribution boxesConnectorized or bare fiberHard-coated dielectric layers on glass substrate
Connector TypesSC/PC, SC/APC, or bare fiberMost standard fiber connectorsN/A
ApplicationsFTTx, LAN/WAN, CATV, telecom networksSignal splitting/combining in fiber networksOptical experiments, wavelength separation, laser systems
MaterialSilica-based waveguideFused silica fiberAlternating low/high refractive dielectric layers

Notes on Types

  • PLC Splitters: Offer high port counts (up to 128), low insertion loss, low PDL, and excellent thermal stability. Suitable for high-density FTTH networks and scalable telecom applications .
  • FBT Splitters: Typically used for 1:2 splits with uneven power distribution. Can combine or split signals and are compatible with various connector types .
  • Dichroic Beam Splitters: Separate light based on wavelength, transmitting short-wave and reflecting long-wave radiation (or vice versa). They are used in optical labs and laser systems, with precise spectral transition zones .

Environmental and Mechanical Considerations

  • Optical splitters for FTTH networks are designed to withstand temperature and humidity variations, maintain low loss under bending, and resist corrosion .
  • Housing materials include aluminum or stainless steel for protection, and coatings ensure durability and minimal environmental impact. This table provides a consolidated view of spectrum splitter specifications across different technologies, enabling selection based on application requirements, wavelength range, and network design.
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