Abstract: 

Multimode fibers, with a diameter reduced to less than that of a human hair as well as offering lensless micrometer resolution, emerge as top contender for next generation endoscopic probes. However, due to mode coupling, all these advantages cannot be exploited without the knowledge of its transmission matrix. In this presentation, we will introduce two different approaches for multimode characterization. The first utilizes an external reference together with high-speed off-axis holography for real-time field detection and mode extraction. The second harnesses principles of Spatial State Tomography to retrieve the transmission matrix when the external reference is not available.  

Bio: 

Marcos Maestre Morote obtained his bachelor’s degree in Telecommunication Engineering from Universidad Miguel Hernandez the Elche (Spain) and his Master´s degree in Telecommunication Engineering from Universidad Polictenica de Catalonia (Spain). Marcos spent 12 months prior to commencing his PhD working as an intern at Nokia Bell Labs (USA) under the supervision of Nick Fontaine. In 2020, Marcos joined the Photonics research group at the University of Queensland as a PhD student under the supervision of Dr. Joel Carpenter. The group’s main research area is wavefront shaping and light manipulation through multimode fibres. Marcos’ PhD research focuses on developing holographic and non-holographic approaches for the characterization of multimode fibres, which is a fundamental step toward minimally invasive, more compact, and simpler endoscopic probes.