arXiv subjects

Francisco J. Diaz-Otero

Publications and source records attributed to Francisco J. Diaz-Otero.

2 recordsLinked to original sources

arXiv2024

Apodized Slanted Grating Couplers for LiDAR Applications

Solid state LiDAR systems traditionally rely on costly active components for efficient beam scanning. In this study, we propose a cost-effective, purely passive steering approach using apodized slanted grating couplers. Through apodization, we achieve a uniform upward emission profile and enhanced upward transmission. Theoretical calculations indicate successful steering of 91.5$^\circ$x42.8$^\circ$. Experimental results closely match theoretical predictions, validating the capabilities of our passive steering concept. Additionally, the grating couplers, with a length of 3mm, enable a farfield FWHM of 0.026$^\circ$, further enhancing sensing resolution.

physics.optics↗

arXiv2023

Monolithically Integrated Wavelength-meter in InP with measurement bandwidth of 100nm centered on the C band

In this paper we will explore the creation of a monolithically integrated wavelength meter in InP. This type of devices are a key requirement for many applications and it is especially important to have them integrated with active components like lasers and gain sections. We present a wavelength meter based on multiple ring resonators that has been realized in a commercial MPW run and tested using a tunable laser. The designed circuit is theoretically capable of resolution down to 1.6pm and a measurement speed down to 500ps within a wavelength range of 100nm.

physics.optics↗