Table 1 Determined loss coefficients in units of dB mm-1 as determined with the cutback method and image-based analysis.

From: Natural Silk as a Photonics Component: a Study on Its Light Guiding and Nonlinear Optical Properties

Wavelength

Cutback method

Image-based analysis

520 nm

642 nm

730 nm

520 nm

642 nm

730 nm

Sample 1

5.15(12)

4.07(16)

3.91(8)

1.34(16)

1.13(22)

0.98(42)

Sample 2

3.67(2)

3.61(3)

2.75(3)

1.50(19)

1.30(11)

Sample 3

5.20(5)

3.15(4)

2.27(13)

0.58(5)

0.67(23)

Sample 4

5.71(6)

5.31(8)

5.84(3)

1.55(21)

0.54(13)

0.67(23)

Sample 5

2.91(3)

3.40(3)

2.90(3)

Average

4.53

3.91

3.53

1.24

0.99

0.77

  1. Numbers marked with dash (−) mean missing data. Numbers in parenthesis indicate the uncertainty in fitted parameters as given by the fitting routine.