Abstracts - Tuesday 14th February
STREAM TWO: Free Space Optics Session Chair: Martin Lavery, Glasgow University
12:00 - 12:30 Photonic Lantern-Based High Capacity Multiple-Input Multiple-Output Free-Space Optical Communications Yiming Li, Aston University
By developing a highly-flexible digital signal processing (DSP) architecture, we successfully demonstrate record-high-performance mode- division multiplexing (MDM) multiple-input multiple-output (MIMO) coherent free-space optical (FSO) communication systems. The DSP architecture supports versatile MIMO
11:00 - 11:30 Processing multiple FSO beams with programmable photonic integrated circuits
decoding algorithms, allowing us to demonstrate a record-high channel number of 10. By employing the adaptive bit-loading algorithm, the DSP architecture demonstrated a spectral efficiency of 28.35 bit/s/Hz and a record-high transmission line rate of 1.33 Tbit/s. By employing a successive interference cancellation MIMO decoder, the system also demonstrates enhanced turbulence resiliency using the DSP-based method with a line rate of 689.23 Gbit/s. Moreover, this architecture supports asynchronous phase noise and shows Cramer-Rao Lower Bound approaching performance for channel and phase estimation. Furthermore, the architecture reduces the hardware requirements and enables the possibility to employ commercially available mode-selective photonic lanterns for MDM transmission, which is preferable for commercial applications.quantum internet.
Francesco Morichetti, Politecnico di Milano Programmable optical processors (POPs) enabl e advanced manipulation of multiple light beams on photonic chips and offer a promising technology for the development of new devices in next- generation FSO systems. In this talk, I will report on the use of POPs as FSO MIMO transmitters and receivers capable of automatically establishing the
best chip-to-chip orthogonal communication channels and separating them with negligible mutual crosstalk, also in the presence of obstacles and time-varying perturbation in the FSO link. The presented POP architectures are implemented on a silicon photonic platform by using self-configuring meshes of integrated thermally-tuneable beam couplers connected to 2D optical phased arrays, and can be integrated with other functionalities onto the same photonic chip. Transmission experiments on spatially overlapped FSO channels at tens of Gbit/s data rates are reported. Applications are illustrated in high capacity short and long range FSO links, wave-front sensing and reconstruction, and beaming through obstacles and scattering media. BC
Workshop 16:00- 17:30
Post-Brexit UK/EU funding landscape for photonics & quantum technology research, innovation and wealth creation Photonics and quantum technology research is a long-standing UK strength, with UK photonics encompassing more than 1000 companies generating over £15 billion in output, and strong UK government support for organisations seeking to harness and commercialise quantum technologies. In January 2021, the UK government announced that it will commit to become an associated country to Horizon Europe, so that UK scientists, businesses and innovators will be able to access funding on equivalent terms as organisations in EU countries, but the process is yet to be finalised. Meantime, researchers and businesses have been encouraged to continue to work together in establishing global consortia to bid for funding. How are UK, EU and global researchers, innovators and investors responding to this challenging new situation, what obstacles and new opportunities are they encountering, and what are the best current and future strategies for established partnerships and for nurturing new research, business and investor relationships?
11:30 - 11:45 Empowering Connectivity
Robert Hughes, Aircision Aircision is developing the next generation of Free Space Optical Communication links to enable ultra-high-speed data transmission for terrestrial applications and ensuring this can be done in a sustainable way whilst being cost competitive. FSO systems in the past have either a taken a 'fix and forget' or more recently have included basic
alignment techniques to manage the environmental effects (changes in weather conditions). Aircision is taking a novel approach by combining techniques used in space, fixed line, and wireless to overcome the mechanical (movement/vibrations) and atmospherics (beam scintillation, scattering, and wander) through it's SenseFuse-IQ software manager. 11:45 - 12:00 Small Form Factor fiber optic connectors for Satellite and Space applications Guy Nurse, Passcomm
Speaker panel:
With the widening use of quantum technologies in real world applications the demands placed on photonics components used is also increasing. Requirements for maintaining high optical performance in difficult environments exposed to harsh thermal (hot and cold), shock and vibration has led to improvements in design and
Carole Monaghan (MP) chair of APPG Photonics
Manjari Chandra-Ramesh Amadeus
manufacturing of fiber optic connectors. For these demanding situations, Diamond SA of Switzerland offers the AVIM ® connector family, having a small form factor, good vibration, shock and wide operating temperature range which already has a history of successful space missions (eg Lunar Reconnaissance Orbitor, ISS). The latest addition to the range is the Diamond Micro Interface (DMI). The DMI has undergone rigorous testing by NASA for use on the James Webb Space Telescope, which included cryo testing below 100 Kelvin. Testing showed minimal change in performance, with maximum change in measured Insertion Loss.
Carlos Lee EPIC Association
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02/02/2023 09:29:54
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