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Single Mode Polarization And Wavelength Independent Couplers

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Parameter
Grade "A"
Operating Wavelength (nm)
1550 or 1590, others on request
Bandwidth (nm)
±40
Excess Loss (dB)
≤ 0.08
Coupling Ratio (%)
1/99

3/97

5/95

10/90
Max Insertion Loss (dB)
21.5/0.2

17.5/0.3

14.6/0.4

10.8/0.6
Wavelength Dependent Loss (tap port,dB)
±0.4

±0.4

±0.3

±0.3
Polarization Dependent Loss (tap port,dB)
≤ 0.10
Thermal Stability (tap port, dB/℃)
≤ 0.002 over -40℃ to +85℃
Directivity (dB)
1×2

≥ 50 , ≥ 60 on request
2×2

≥ 65 .

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