Comment on "Wavelength controlled photonic true time delay for wide-band applications"

For original paper see Raz et al., ibid., vol.17, no.5, p.1076 (2005). Recently, motivated by wide-band radio frequency antenna control applications, Raz proposed and demonstrated a wavelength controlled photonic true time delay (TTD) line based on a single thin-film wavelength-division multiplexer. Nabeel comments on this paper.