2.0μm Single-Mode Fused Coupler
DK Photonics optical 2.0μm single-mode fused coupler is used to split off a portion of light to allow for optical monitoring and feedback. These devices are used extensively in fiber amplifier power control, and in transmission equipment for performance monitoring and feedback control. Our ultra-low polarization dependent loss couplers offer low levels of sensitivity to polarization, enable more effective monitoring and management of optical networks. These couplers are available in a wide range of split ratios, lengths, and packaging. Custom terminations are also available.
| Features | Applications |
| · Low Insertion Loss
· Low Polarization Dependent Loss · High stability & Reliability |
· EDFA
· Fiber Laser · Testing Instrumentations |
Performance Specifications
| Parameter | Unit | Values | |
| Operating Wavelength | nm | 1900,1950,2000,2050 | |
| Operating Bandwidth | nm | ±15 | |
| Max. Excess Loss | dB | 0.4 | |
| Max. Insertion Loss | 50/50 | dB | 3.6/3.6 |
| 40/60 | dB | 4.8/2.8 | |
| 30/70 | dB | 6.0/2.0 | |
| 20/80 | dB | 8.0/1.5 | |
| 10/90 | dB | 11.5/0.75 | |
| 5/95 | dB | 14.5/0.5 | |
| 2/98 | dB | 18.5/0.35 | |
| 1/99 | dB | 22/0.3 | |
| Max. Polarization Dependent Loss | dB | 0.15 | |
| Min. Directivity | dB | 50 | |
| Max. Optical Power(CW) | W | 0.5,2,5,10 | |
| Fiber Type | – | SMF-28e or Nufern SM 1950 | |
| Operating Temperature | ℃ | 0~+65 | |
| Storage Temperature | ℃ | -40~+85 | |
| Package Dimension | mm | Ф3×45(bare fiber), Ф3×60(0.9mm loose tube) | |
- Above specifications are for device without connector.
- For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower. Powers transmit through the connector less than 2W.
Order information P/N: FBTC-①-②-③-④-⑤-⑥-⑦-⑧-⑨-⑩
When you inquire, please provide the correct P/N number according to our ordering information, and attach the appropriate description would be better. If need any connector, we do not recommend choosing a 250μm bare fiber pigtail.
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