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Single-mode Fiber Coupler 1×4

SENKO’s Single-mode Fiber Couplers are highly stable for multi-port optical signal splitting with low insertion loss. All devices are qualified according to industry standard test procedures.

  • Single Fusion
  • RoHS Compliant
  • Compact packaging
  • Stable and Reliable performance
PARAMETERS VALUES
Type 1×4
Coupling Ratio 25/25/25/25
Insertion loss Max. (dB)¹² See below Table
Uniformity Max. (dB) See below Table
Return loss Min. (dB)² 55
Directivity Min. (dB) 55
PDL Max. (dB) See below Table
WDL Max. (dB)³ See below Table
TDL at -5~70°C Max. (dB) 0.3
Housing dimension 250µm fiber 3.0mm (Ø) x 54mm (L)
900µm tube 4.0mm (Ø) x 60mm (L)
2mm/3mm tube, ABS Box: 100mm(L)x80mm(W)x10mm(H)
Fiber Type SMF-28e 250µm bare fiber or with 900µm loose tube or with 2/3mm cable
Operating temperature (°C) -40 ~ +85
Storage temperature (°C) -40 ~+85

 

PARAMETERS IL (dB) TYP. / MAX. PDL (dB) MAX. UNIFORMITY (dB) MAX. WDL (dB) MAX.
3 Wavelength Band (1310/ 1550 ±40 and 1490 ±10 nm) 6.8 / 7.5 0.3 1.7 0.6
Dual Wavelength Band (1310/1550 ±40 nm) 6.6 / 7.4 0.25 1.6 0.4
Single Wavelength Band (1310 ±40 or 1550 ±40 nm) 6.5 / 7.2 0.2 1.4 0.3

Notes:
1. The specifications are not including connectors.
2. IL is worst case including PDL, TDL, and WDL.
3. WDL means IL change over Single wavelength band. Only for each window band, not including water peak band.

Network Monitoring

FTTx

Telecommunications

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The fused biconical taper structures exhibits lower losses, allows arbitrary branching ratios, has polarization independence, and a broad range of operational wavelengths.

Splitters are common in telecommunication, network monitoring and FTTX applications. The WMD fused links are used in telecommunication and LAN applications.