Single Mode 1×2 and 2×2 Tube FBT Coupler

Fiber optic accessories, such as adapters, connectors, patch cords, pigtails, attenuators and splitters, are vital to fiber optic network.
Fiber Optic FBT Couplers adopt FBT (Fused Biconical Tapered) technology, and are used for optical signal coupling of fiber transmission and optical power re-allocation. FBT coupler is the most cost-effective and easy connective device in optical transmission system.
FBT Couplers are available in a variety of port configurations, package sizes, coupling ratios, and wavelengths, etc., allowing high flexibility in tailoring the product to suit your precise requirements and application.
All FBT couplers are fully compliant with Telcordia GR-1209 and GR-1221 standards for network applications requiring superior performance and long-term reliability.

Tube FBT Coupler without optical fiber connectors can be spliced with optical fibers to get low loss, while Tube FBT Coupler terminated with connectors can connect with optical fiber adaptors and enables quicker connection and disconnection than splicing. Tube FBT Couplers are widely used for fiber optic communication system in telecommunication, CATV, etc.

Features:

  • Low PDL
  • High Stability
  • High Directivity
  • Environmentally stable
  • Small package dimension
  • Low Polarization dependence
  • Low Insertion Loss and High Return Loss

Applications:

  • CATV
  • LAN & WAN
  • Telecommunication networks

Standards:

  • Telcordia GR-1209and GR-1221
Reliability Tests:
Tension 0.23kg, 1 minute
Impact 1.8m height, 3 axes, 8 times per axis
Vibration 10Hz~ 55Hz, amplitude 1.52mm, 3 axes, 4 hours per axis
Low Temperature -40±5°C, 5,000 hours
High Temperature 85±2°C, 5,000 hours
Water Immersion 43±2°C /PH5.5±0.5, 168 hours
Warm and Humidity 75±2°C/90±5%RH, 5,000 hours
Temperature Cycling -40±2°C~85±2°C, 300 periods, 2,400 hours
Single Window:
Specifications:
Port Configuration 1×2 2×2
Operating Wavelength 1310nm or 1550nm
Bandwidth ±20nm
Coupling Ratio 1~50
Excess Loss ≤0.15dB
PDL ≤0.15dB
Thermal Stability ≤0.1dB/°C
Directivity ≥55dB ≥60dB
Uniformity ≤0.8dB
Return Loss ≥55dB
Fiber Type Corning SMF-28
Fiber Length 1 meter or customized
Cable Diameter 250um bare fiber 900um loose tube
Package Dimension Φ3×54mm Φ3×60mm
Operating Humidity ≤93%RH
Storage Humidity ≤93%RH
Operating Temperature -40~+85°C
Storage Temperature -40~+85°C

Note: Wide bandwidth of ±40nm is available at customers’ request.

Coupling Ratio and Insertion Loss:
Coupling Ratio (100%) Insertion Loss
Typical Maximum
1/99 20.8/0.2 21.6/0.3
2/98 19.0/0.2 20.0/0.3
3/97 16.5/0.3 17.0/0.4
5/95 14.1/0.3 14.9/0.6
10/90 10.6/0.6 11.3/0.9
15/85 8.6/0.8 9.3/1.1
20/80 7.3/1.1 7.9/1.4
25/75 6.3/1.4 6.8/1.7
30/70 5.5/1.7 6.0/2.0
35/65 4.8/2.1 5.3/2.4
40/60 4.2/2.4 4.7/2.8
45/55 3.7/2.8 4.2/3.3
50/50 3.2/3.2 3.7/3.7
Dual Windows:
Specifications:
Port Configuration 1×2 2×2
Operating Wavelength 1310nm and 1550nm
Bandwidth ±40nm
Coupling Ratio 1~50
Excess Loss ≤0.15dB
PDL ≤0.15dB
Thermal Stability ≤0.1dB/°C
Directivity ≥55dB ≥60dB
Uniformity ≤0.8dB
Return Loss ≥55dB
Fiber Type Corning SMF-28
Fiber Length 1 meter or customized
Cable Diameter 250um bare fiber 900um loose tube
Package Dimension Φ3×54mm Φ3×60mm
Operating Temperature -40~+85°C
Storage Temperature -40~+85°C
Operating Humidity ≤93%RH
Storage Humidity ≤93%RH
Coupling Ratio and Insertion Loss:
Coupling Ratio (100%) Insertion Loss
Typical Maximum
1/99 21.5/0.2 22.0/0.3
2/98 18.5/0.24 19.1/0.35
3/97 16.5/0.31 17.0/0.41
5/95 14.1/0.39 14.9/0.52
10/90 10.9/0.64 11.5/0.8
15/85 8.6/1.0 9.0/1.1
20/80 7.6/1.2 8.1/1.3
25/75 6.3/1.4 6.8/1.7
30/70 5.6/1.9 6.0/2.0
35/65 4.892.1 5.3/2.4
40/60 4.2/2.4 4.7/2.8
45/55 3.7/2.8 4.0/3.1
50/50 3.4/3.4 3.6/3.6
Triple Windows:
Specifications:
Port Configuration 1×2 2×2
Operating Wavelength 1310nm, 1490nm and 1550nm
Bandwidth 1310/1550±40nm, 1490±10nm
Coupling Ratio 1~50
Excess Loss ≤0.07dB
PDL ≤0.15dB
Thermal Stability ≤0.1dB/°C
Directivity ≥55dB ≥60dB
Uniformity ≤0.8dB
Return Loss ≥55dB
Fiber Type Corning SMF-28
Fiber Length 1 meter or customized
Cable Diameter 250um bare fiber 900um loose tube
Package Dimension Φ3×54mm Φ3×60mm
Operating Humidity ≤93%RH
Storage Humidity ≤93%RH
Operating Temperature -40~+85°C
Storage Temperature -40~+85°C
Coupling Ratio and Insertion Loss:
Coupling Ratio (100%) Insertion Loss
Typical Maximum
1/99 21.5/0.2 22.5/0.25
2/98 18.5/0.24 18.8/0.3
3/97 16.5/0.31 17.0/0.41
5/95 14.1/0.39 14.6/0.44
10/90 10.9/0.64 11.3/0.66
15/85 8.6/1.0 9.0/1.1
20/80 7.6/1.2 8.0/1.2
25/75 6.3/1.4 6.8/1.7
30/70 5.6/1.9 6.0/1.9
35/65 4.892.1 5.3/2.4
40/60 4.2/2.4 4.7/2.7
45/55 3.7/2.8 4.0/3.1
50/50 3.4/3.4 3.6/3.6
Ordering Information:
Brand MAY
Name FBT=FBT Coupler
Port 12: 1×2
22: 2×2
Package T: Tube
Fiber Mode 2D: SM G.652.D
7A1: SM G.657.A1
Wavelength 3: 1310nm
5: 1550nm
35: 1310nm and 1550nm
345: 1310nm, 1490nm and 1550nm
Cable Diameter 5: 250um
9: 900um
Cable Length 0.5: 0.5m
1: 1m
1.5: 1.5m
2: 2m; etc
Connector SU: SC/UPC
SA: SC/APC
FU: FC/UPC
FA: FC/APC
LU: LC/UPC
LA: LC/APC; etc
None=without connectors
Coupling Ratio 1: 1/99
3: 3/97
50: 50/50, etc
For example:
Picture Model Description
MAY-FBT-12-T-2D-3-9-1-SU-50 FBT coupler, 1×2, tube package, single mode G.652.D, 1310nm, 900um cable, 1m, with 3 pieces of SC/UPC connectors, coupling ratio: 50/50
MAY-FBT-22-T-2D-35-9-1-TU-1 FBT coupler, 2×2, tube package, single mode G.652.D, 1310nm & 1550nm, 900um cable, 1m, with 3 pieces of ST/UPC connectors, coupling ratio: 1/99