Table 1 Gain characteristics of the 250, 700, and 1200 μm long hybrid slot waveguides

From: Ultra-high on-chip optical gain in erbium-based hybrid slot waveguides

Waveguide length (μm)

Signal enhancement (dB)

Net modal gain (dB/cm)

Net material gain (dB/cm)

250

1.40 ± 0.15

20.1 ± 7.31

≥63.8 ± 23.2

700

3.69 ± 0.15

16.9 ± 4.70

≥53.7 ± 14.9

1200

6.28 ± 0.15

16.5 ± 4.36

≥52.4 ± 13.8