SMF Optical Fused Coupler
Pictures and Schematic Diagram
Technical Specifications of SMF Optical Fused Coupler
Made with single mode fiber, the SMF optical fused coupler has been put through a process known as fused biconical taper to produce different light signal splitting ratios. The optical coupler is widely used in CATV or optical communications system. Depending on the specific applications, users can select different coupling ratios.
Features of SMF Optical Fused Coupler
Good uniformity and low insertion loss
Low Polarization Dependent Loss
Various Coupling Ratio
Excellent Mechanical Properties
Compact Size
Applications of SMF Optical Fused Coupler
Fiber Optic Sensors
Long-Haul Telecommunication
Local Area Networks (LAN)
CATV Systems
Fiber to the Subscriber (FTTx) applications
Technical Specifications of SMF Optical Fused Coupler
| Parameter | 1´2 or 2´2 | |||
| Operating Wavelength | nm | 1310, 980 or 1550 | 1310 or 1550 | |
| Bandwidth | nm | ±40 | ||
| Excess Loss | dB | ≤0.1 | ||
| Coupling Ratio | Max. Insertion Loss (dB) | |||
| 50/50 | 3.4 | 3.5 | ||
| 40/60 | 4.4/2.5 | 4.6/2.7 | ||
| 30/70 | 5.6/1.8 | 5.9/1.9 | ||
| 20/80 | 7.5/1.2 | 7.8/1.3 | ||
| 10/90 | 10.8/0.65 | 11.0/0.75 | ||
| 5/95 | 14.6/0.4 | 14.5/0.4 | ||
| 3/97 | 17.5/0.3 | 17.5/0.3 | ||
| 2/98 | 18.5/0.25 | 19/0.25 | ||
| 1/99 | 21.5/0.20 | 22/0.19 | ||
| Polarization Dependent Loss (dB) | dB | ≤0.1 | ||
| Directivity (dB) | dB | ≥50 | ||
| Fiber Pigtail Length (m) | 1 m or custom length | |||
| Operating Temperature | ℃ | 125µm Bare fiber | Loose tube | |
| -40 to 85 | -20 to 70 | |||
| Package Dimension | mm | φ3.0´54 or bespoke dimensions | ||
Note: All insertion loss doesn't include connector loss.
For fiber optic devices with connectors, the insertion loss will be 0.3 dB higher.
Order Information
COU-A-B-C-D-E-F-G-H-I-J
