Answers are grounded in this paper and cite their sources.
Losses as low as 0.4 ± 0.1 dB/cm for TE- and 0.65 ± 0.1 dB/ cm for TM-polarised light have been observed in tightly confined single-mode InP/lnGaAsP waveguides grown by MOVPE and processed using RIE. These are the lowest losses reported for InP-based waveguides. The structure could be used to make low-loss modulators for communications wavelengths.
No takes yet. Share an insight, caveat, or question.
McIlroy et al. (1987) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: