RT Journal Article
T1 On-Chip Metamaterial Antenna Array with Distributed Bragg Deflector for Generation of Collimated Steerable Beams
A1 Ginel-Moreno, Pablo
A1 Hadij-El-Houati, Abdelfettah
A1 Sánchez-Postigo, Alejandro
A1 Wanguemert-Pérez, Juan Gonzalo
A1 Molina-Fernández, Íñigo
A1 Schmid, Jens H.
A1 Cheben, Pavel
A1 Ortega-Moñux, Alejandro
K1 Antenas
AB The generation of collimated steerable beams of light is a fundamental function in optics needed in many applications, including free-space optical communications, remote sensing, and light detection and ranging. Implementing large-aperture light emitters directly on a photonic integrated chip without using external optics and expensive alignment systems is an outstanding challenge in integrated photonics. Here, the experimental demonstration of a new integrated antenna array architecture that uses a compact feeding circuit is reported. The design is based on an apodized Bragg deflector working as a low-loss (<0.3 dB) ultra-compact beam expander, which generates a 40-µm-wide on-chip Gaussian beam that illuminates a one-dimensional array of 112 optical antennas with a length of 1.5 mm. Each antenna comprises a metamaterial subwavelength grating waveguide core that is laterally loaded with an array of periodic radiative silicon segments. The device is fabricated on a 220-nm silicon-on-insulator platform using a single etch process with a minimum feature size of 80 nm. An antenna array with a power gain of 50 dB, a radiation efficiency of −3.8 dB, and a far-field angular divergence of 1.8° × 0.2°, in a wavelength range of 1500–1580 nm is presented.
PB WILEY
YR 2022
FD 2022-07-03
LK https://hdl.handle.net/10630/24659
UL https://hdl.handle.net/10630/24659
LA eng
NO Ginel-Moreno, P., Hadij-ElHouati, A., Sánchez-Postigo, A., Wangüemert-Pérez, J. G., Molina-Fernández, Í., Schmid, J. H., Cheben, P., Ortega-Moñux, A., On-Chip Metamaterial Antenna Array with Distributed Bragg Deflector for Generation of Collimated Steerable Beams. Laser & Photonics Reviews 2022, 2200164. https://doi.org/10.1002/lpor.202200164
NO This work was supported by the High Throughput and Secure Networks Challenge Program at the National Research Council of Canada (HTSN 209); Ministerio de Ciencia, Innovación y Universidades (MCIU) (PID2019-106747RB-I00); Ministerio de Universidades (FPU16/03401, FPU20/03487); Junta de Andalucía (P18-RT-1453, P18-RT-793); FEDER Andalucía (UMA20-FEDERJA-158); Universidad de Málaga. Funding for open access charge from Universidad de Málaga/CBUA is acknowledged.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 3 mar 2026