The European H2020-SPACE-ORIONAS project targets the development of optical transceiver and amplifier integrated circuits and modules applicable to high-speed and compact laser communication terminals. This paper presents the most recent project achievements in two areas. Firstly, the fabrication of high-speed electronic-photonic modulator and receiver circuits monolithically integrated in the silicon photonics platform and their assembly in bread-board level photonic modules. Secondly, the assembly, integration and testing of a radiation resistant, high-gain optical fiber preamplifier which exploits hi-rel small form factor fiber optics to shrink the module mass and footprint.
Photonic Integrated Circuits (PICs) are expected to have a primary role for space applications in the years to come. The growing interest for the PICs for space applications lays in the fact the integrated photonics brings notable advantages as, among others: 1) Size, Weight and Power (SWaP) reduction 2) Removal/reduction of electromagnetic interferences 3) More flexibility (e.g. Network-on-chip) 4) Convergence with integrated electronics with potential costs reduction and improved performance (e.g. Beamforming) 5) Possibility to avoid optical to electronic to optical conversions (O-E-O) by maintaining some functions at photonic level in the optical domain, like for example in optical beamforming and photonics-based up- and down-conversion However, photonic packaging is less mature than its microelectronic counterpart. In fact, considering the great advancements in designing and fabricating integrated photonic chips, photonic packaging still represents a limiting factor and requires dedicated effort especially in view of a full exploitation of integrated photonics for Space applications. There is necessity to develop the proper packaging technologies compatible with the Space requirements as well the proper packaging line processes controls and documentations. PIOTS project aims to answer such demand by creating an end-to-end packaging pilot line that is strategically oriented to the demands of ESA and European space industry. This goal will be demonstrated through the realization of two test vehicles and the validation of manufacturing processes, equipment and techniques by means of an adequate Quality System implementation, including documentation and in-line controls as required to manufacture a product complying with requirements of the space sector. The paper will update on the project status focusing on the two test vehicles: TV1 - a hermetically packaged laser integrated with a SOI device TV2- a hermetically packaged SOI device with 8 in/out pigtailed fibers.
H2020-SPACE-ORIONAS is a 3-year Research and Innovation Action program funded by the European Commission focusing on the development of compact optical transceiver and amplifier modules applicable to new generation optical inter-satellite links. ORIONAS explores photonic integrated circuits and small form factor fiber optics leveraging their success in datacenter interconnect and hi-rel aerospace applications to deliver miniaturized modules and devices that can shrink considerably the SWaP of lasercom terminals. This paper presents the most recent project achievements.
The future global-scale quantum communication network will require free-space and satellite links able to work in daylight conditions and compatible with the telecom fiber infrastructure. Here we present a full prototype for daylight quantum key distribution at 1550 nm exploiting an integrated silicon-photonics chip as state encoder. We tested our prototype in the urban area of Padua (Italy) over a 145m-long free-space link, obtaining a quantum bit error rate around 0.5% and an averaged secret key rate of 30 kbps. The developed chip represents a cost-effective solution for portable free-space transmitters and a promising resource for future satellite missions.
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