Multimode coupler

Multimode coupler

Specially_Couplers

Multimode coupler

Features

  • Low insertion loss
  • Low excess loss
  • Low PDL
  • High directivity
  • Environmentally stable and reliable

Applications

  • IMT 2000
  • CATV
  • Wide Area Network
  • Local Area Network
  • Telecommunication system
  • FTTH
  • Test instrument

Specification

(50:50 coupling ratio, 50/125㎛ fiber

Parameter Unit Grade
Premium Standard
Operating Wavelength nm 800 to 1600
Wavelength Bandwidth nm ±10
Max. Insertion Loss dB 3.9 4.5
Typical Excess Loss dB 0.1 0.3
Max. Uniformity dB 0.6 1.0
Max. Polarization Dependent Loss dB 0.10 0.15
Min. Directivity dB 40
Min. Return Loss dB 50
Temperature Coefficient dB/℃ 0.002
Operating Temperature -40 to +85
Storage Temperature -50 to +85

without connectors

Coupling Ratio(%) / Insertion Loss(dB) Conversion Chart

Coupling Ratio(%) Unit Grade
Premium Standard
40 / 60 dB 4.9 / 3.0 5.4 / 3.8
30 / 70 dB 6.2 / 2.3 6.7 / 2.7
20 / 80 dB 8.0 / 1.6 8.7 / 2.1
10 / 90 dB 11.3 / 1.1 12.2 / 1.6
5 / 95 dB 14.6 / 0.9 16.2 / 1.3
1 / 99 dB 22.1 / 0.7 22.7 / 1.0