1. Carrier-grade standard, low insertion loss, high efficiency and stability, long life 2. Strong optical performance, strong stability and good repeatability 3. Good interchangeability, good isolation effect, easy to learn 4. Can effectively suppress ground loop noise, eliminate ground interference, effectively isolate the signal site from the main control terminal electrically, and avoid accidental damage to the main control terminal 5. Advanced grinding equipment ensures that the center of the optical fiber is offset. It adopts a zirconia sleeve with high temperature resistance, acid resistance and alkali resistance (high density), which has good optical properties and good mechanical properties. 6. Optical fiber is widely used in distribution frames, broadband network access in optical fiber communication systems, optical fiber CATV optical fiber instruments and other reliable performance 7. Good temperature stability, low insertion loss, high return loss 8. Insertion loss: less than or equal to 0.3dB 9. Return loss: greater than or equal to 55dB 10. Insertion times: more than 1000 times 11. Ferrule Type: Ceramic 12. Working temperature: -40 to 80 degrees Celsius 13. Storage temperature: -55 to 85 degrees Celsius 14. Ambient humidity: 95RH 15. Accurate attenuation: less than 0.5db 16. Wavelength parameters: single mode 1310-1550nm 17. Wavelength: 1310-1550nm