1310/1490/1550 0.9mm Fiber Optic FBT Coupler Without Connector
FBT Coupler Description
Fiber optic coupler, is a device applicated in optical fiber
systems with one or more input fibers and one or several output
fibers.For the fused optical splitter,It can be divided into
different ratios.such as 50/50 if the split is even, or 80/20 if
80% of the signal goes to one side and only 20% to the other.As a
result of its great funciton,Optical splitter is a very important
part in passive opitc networks (PON).FTB Fused fiber splitter
(coupler) can do Singlemode (1310/1550nm) and Multimode
(850nm).Cable diameter can be 0.9mm,2.0mm,3.0mm ,Single window,dual
window and three window all we can supply .
Singlemode Dual Window Couplers are Single Mode Splitters with a
defined split ratio from one or two input fibers to 2 output
fibers. Available split counts are 1x2 and 2x2 in split ratios of:
50/50, 40/60, 30/70, 20/80, 10/90, 5/95, 1/99, 60/40, 70/30, 80/20,
90/10, 95/5, and 99/1. Dual Window Couplers are availble with
0.9mmloose tube singlemode fiber or 250umbare fiber and terminated
or unterminated as per your needs. UnconnectorizedDWC's come with
no connectors for easy splicing or connectorization. Connectorized
DWC's are available with your choice of Fiber Optic Connectors:
LC/UPC, LC/APC, SC/UPC, SC/APC, FC/UPC, FC/APC, and ST/UPC.
FBT Coupler Features
1. Low Excess loss
2. Low PDL
3. Environmentally stable
4. Good Thermal Stability
FBT Coupler Application
1. Long-haul Telecommunications
2. CATV Systems & Fiber Optic Sensors
3. Local Area Network
FBT Coupler Parameters
| Parameters | Specification |
| Channel Number | 1x2 |
| Fiber Type | G652D |
| Connector | Without Connector |
| Operating Wavelength (nm) | 1310/1550/1490 |
| Operating Bandwidth(nm) | ±40 |
| Coupling Ratio | Coupling Ratio Insertion Loss (dB) |
| P Grade | A Grade |
| 50/50 | ≤3.3 | ≤3.5 |
| 40/60 | ≤4.5/2.6 | ≤4.7/2.8 |
| 30/70 | ≤5.7/1.9 | ≤5.9/2.1 |
| 20/80 | ≤7.6/1.3 | ≤7.75/1.38 |
| 10/90 | ≤10.85/0.68 | ≤11.2/0.75 |
| 5/95 | ≤14.4/0.45 | ≤15.5/0.48 |
| 2/98 | ≤18.5/0.6 | ≤19.8/0.38 |
| 1/99 | ≤21.8/0.28 | ≤22.8/0.35 |
| PDL(dB) | ≤0.15 | ≤0.2 |
| Directivity(dB) | ≥50 |
| Return Loss | ≥55 |
| (1xN) | N=3 | N=4 | N=5 | N=8 | N=16 | N=24 | N=32 | N=64 |
| Fiber Type | Corning SMF-28e |
| IL (MAX) (dB) | 5.41/5.62 | 7.01/7.22 | 7.81/8.02 | 10.01/10.42 | 13.51/13.92 | 15.01/15.42 | 17.31/17.52 | 21.01/21.52 |
| Uniformity (dB) | 0.51/0.62 | 0.51/0.62 | 0.61/0.82 | 0.81/1.02 | 1.11/1.32 | 1.21/1.52 | 1.31/1.52 | 2.11/2.52 |
| Return Loss (dB) | ≥55 |
| Directivity (dB) | ≥50 |
| PDL (dB) | < 0.20 | < 0.20 | < 0.30 | < 0.30 | < 0.40 | < 0.50 | < 0.50 | < 0.20 |
