Answers are grounded in this paper and cite their sources.
A grating spectrometer integrated monolithically in the InGaAsP system with a photodiode array for a dense WDM system is presented for the 1.5 μm wavelength region. The chip provides more than 30 wavelength channels with a spacing of 4 nm, a channel crosstalk of approximately −15 dB, an internal photodiode efficiency of 90% and a photodiode capacitance of 0.33 pF. The chip needs no optical adjustments. It is therefore well suited to mass production.
No takes yet. Share an insight, caveat, or question.
Cremer et al. (1993) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: