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DA-FBT 1x2 FBT Fiber Optical Coupler
  • DA-FBT 1x2 FBT Fiber Optical Coupler
  • DA-FBT 1x2 FBT Fiber Optical Coupler
  • DA-FBT 1x2 FBT Fiber Optical Coupler
  • DA-FBT 1x2 FBT Fiber Optical Coupler

DA-FBT 1x2 FBT Fiber Optical Coupler

Place of Origin CHINA
Certification CE ROHS
Model Number DA-FBT 1x2
Product Details
EDFA/CATV System/Passive Network/FTTH & LAN
Storage Temperature:
-40 ~ +85°C
High Light: 

EDFA fbt optical coupler


EDFA fbt fiber coupler


1x2 FBT Fiber Coupler

Payment & Shipping Terms
Minimum Order Quantity
Packaging Details
Blastic Package
Delivery Time
Payment Terms
L/C, D/A, D/P, T/T
Supply Ability
10K per day
Product Description

DA-FBT 1x2 FBT Fiber Coupler

Dawnergy’s FBT fiber couplers are fused fiber branching devices that split off a portion of light to allow for optical monitoring and feedback. These devices are used extensively in fiber amplifier power control. They are also utilized in transmission equipment for performance monitoring and feedback control.



  • Compact size
  • Low insertion loss
  • Low PDL
  • High stability and reliability



  • EDFA
  • CATV system
  • Passive network
  • FTTH & LAN


Parameters Specifications
Type Single Window Dual Window
Center Wavelength (nm) 1310 or 1550 1310 and 1550
Bandwidth (nm) ±40
Type 1×2
Maximum Insertion Loss (dB) 50/50 ≤3.4
40/60 ≤4.4/2.6
30/70 ≤5.7/1.9
20/80 ≤7.6/1.3
10/90 ≤10.7/0.7
5/95 ≤13.8/0.4
3/97 ≤16.5/0.3
2/98 ≤18.1/0.3
1/99 ≤21.2/0.2
Typical Excess Loss (dB) ≤0.1
PDL (dB ) ≤0.1
Directivity (dB) ≥50
Operating Temperature (°C ) -10 ~ +70
Storage Temperature (°C ) -40 ~ +85
Package Dimensions (mm)
  • Stainless Tube Type: Ø3.0×54, or Ø3.0×60 for 250um bare fiber or 900um loose tube
  • Cassette Type: 90×20×10, 100×80×10 for 2mm,3mm cable
  • Rack Chassis Type: 19” rack chassis
  • Based on customer requirement

Ps: Above specifications are for devices without connector

Add an additional 0.2dB loss per connector DA-FBT 1x2 FBT Fiber Optical Coupler 0


Ordering Information



PN Name Description
2-P-3-1-0-3-2-50-6-1M FBT Fiber Coupler 1x2; Dual window, 1310/1550nm; Package size: 90x20x10mm;2.0mm cable; 50/50; LC/UPC connector




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