750/780/850/890nm Single Mode Standard Couplers

Specifications

Parameter    A/P

Operating Wavelength(nm)    750 or 780 or 850 or 890 on request

Bandwidth (nm)    ±10

Excess Loss(dB)    A:≤ 0.10       P:≤0.12

Coupling Ratio(%)    10/90    20/80    30/70    40/60    50/50

Max. Insertion Loss (dB)    11.0/0.7    7.7/1.3    5.8/2.0    4.5/2.7    3.5

Polarization Dependent Loss (dB)    0.10/0.05    ≤0.08    ≤0.08    ≤0.08    ≤0.08

Wavelength Dependent Loss(dB)    0.3/0.15    0.3/0.15    0.3/0.15    0.2    0.2

Thermal Stability(dB/℃)    ≤0.002

Return Loss (dB)    ≥50

Directivity (dB)    1X2    ≥50, ≥60on request

    2X2       ≥ 65