Measurand | Value | Standard Uncertainty | Type of distribution | Sensitivity coefficient | Contribution | Contribution (%) |
---|---|---|---|---|---|---|
Planck’s constant, h, [J s] | 6.62607015⋅10−34 J s | 0 | Rectangular | 1.669⋅1032 | 0 | 0 |
Wavelength, λ, [m] | 1.5505⋅10−6 m | 1⋅10−11 m | Rectangular | −71,348.53 | −7.13⋅10−7 | 1.34⋅10−5 |
Speed of light, c, [m/s] | 299.792458⋅10−6 m s−1 | 0 | Standard | 3.69⋅10−10 | 0 | 0 |
InGaAs SPAD Count rate, \(\rho _{\mathit{click}}\), [s−1] | 2156 s−1 | 4.870 s−1 | Standard | 9.10⋅10−5 | 4.43⋅10−4 | 5.18 |
InGaAs SPAD Dark Count rate, \(\rho _{\mathit{Dark},\mathit{click}}\), [s−1] | 920 s−1 | 3.0 s−1 | Standard | −8.85⋅10−5 | −2.82⋅10−4 | 2.09 |
Power meter light measurement, \(P_{\mathrm{cal}}\), (W) | 1.035⋅10−9 W | 4.512⋅10−12 W | Standard | −1.07⋅108 | −4.81⋅10−4 | 6.10 |
Power meter dark measurement, \(P_{\mathrm{Dark}}\), (W) | −3.081⋅10−12 W | 5.544⋅10−13 W | Standard | 1.07⋅108 | 5.91⋅10−5 | 0.09 |
Attenuation factor, α | 38,815 | 569 | Standard | 2.85⋅10−6 | 1.62⋅10−3 | 69.34 |
Power meter correction factor, \(F_{\mathrm{cal}}\) | 0 | −1.785⋅10−4 | Rectangular | −0.111 | 1.97⋅10−5 | 0.01 |
Connect/disconnect fibre factor, \(F_{\mathrm{fconn}}\) | 1 | 0.005 | Rectangular | 0.111 | 5.53⋅10−4 | 8.07 |
InGaAs SPAD Dead time, D, [s] | 10.220⋅10−6 s | 5.90⋅10−9 s | Rectangular | 284.50 | 1.68⋅10−6 | 7.42⋅10−5 |
Laser frequency, \(f_{\mathit{laser}}\), [s−1] | 110,000 s−1 | 63.509 s−1 | Rectangular | −1.18⋅10−8 | −7.47⋅10−7 | 1.48⋅10−5 |
Power meter calibration factor, \(F_{\mathrm{cal}}\) | 1.013 | 5.166⋅10−3 | Standard | −0.109 | −5.64⋅10−4 | 8.39 |
Scaling factor, S | 0.99731 | 1.120⋅10−3 | Rectangular | −0.111 | −1.24⋅10−4 | 0.41 |
Power meter instability factor, \(F_{\mathrm{stab}}\) | 0 | 0.001 | Standard | −0.111 | −1.11⋅10−4 | 0.32 |
Responsivity instability factor, \(F_{\lambda }\) | 0 | 5.0⋅10−6 | Rectangular | −0.111 | −5.53⋅10−7 | 8.07⋅10−6 |
Detection efficiency, η | 0.1107 | 0.0019 | Standard |