InP/Si<sub>3</sub>N<sub>4</sub> Hybrid Integrated Lasers for RF Local Oscillator Signal Generation in Satellite Payloads

InP/Si<sub>3</sub>N<sub>4</sub> Hybrid Integrated Lasers for RF Local Oscillator Signal Generation in Satellite Payloads

This paper presents an integrated tunable hybrid multi-laser module designed to simultaneously generate multiple radiofrequency (RF) local oscillator (LO) signals through optical heterodyning. The device consists of five hybrid InP/Si<sub>3</sub>N<sub>4</sub> integrated laser...

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Bibliographic Details
Main Authors: Jessica César-Cuello, Alberto Zarzuelo, Robinson C. Guzmán, Charoula Mitsolidou, Ilka Visscher, Roelof B. Timens, Paulus W. L. Van Dijk, Chris G. H. Roeloffzen, Luis González, José Manuel Delgado Mendinueta, Guillermo Carpintero
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Photonics
Subjects:
hybrid integrated laser
integrated microwave photonics
satellite communications
Online Access:https://www.mdpi.com/2304-6732/12/1/77
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Summary:This paper presents an integrated tunable hybrid multi-laser module designed to simultaneously generate multiple radiofrequency (RF) local oscillator (LO) signals through optical heterodyning. The device consists of five hybrid InP/Si<sub>3</sub>N<sub>4</sub> integrated lasers, each incorporating an intracavity wavelength-selective optical filter formed by two micro-ring resonators. Through beating the wavelengths generated from three of these lasers, we demonstrate the simultaneous generation of two LO signals within bands crucial for satellite communications (SatCom): one in the Ka-band and the other in the V-band. The device provides an extensive wavelength tuning range across the entire C-band and exhibits exceptionally narrow optical linewidths, below 40 kHz in free-running mode. This results in ultra-wideband tunable RF signals with narrow electrical linewidths below 100 kHz. The system is compact and highly scalable, with the potential to generate up to 10 simultaneous LO signals, being a promising solution for advanced RF signal generation in high throughput satellite payloads.
ISSN:2304-6732

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