Pristupačnost
The objective of this project is to advance the state-of-the-art in optical access networks and also apply the same ideas to sensor networks. Proposed project addresses the EU targets as defined by European Commission’s “Europe 2020” strategy for smart growth by focusing on research and development of highly-integrated and energy efficient optical transceivers and wavelength-division-multiplexing (WDM) components for next-generation of access and mobile backhaul networks using passive optical network (PON) infrastructure. The primary challenge, in wider adoption of WDM-PON, lies in the development of sufficiently low cost technology to be used at the users’ premises. Self-seeded WDM-PON has been actively investigated in recent years as potentially the lowest cost solution for next-generation access networks. The primary attraction of this architecture is its simplicity, lower power consumption, and cost advantage. Similar principles can be applied to multiplexing and interrogation systems for optical sensors and our aim is to develop, analyze and demonstrate sustainable all-optical infrastructure based on extended cavity resonators able to provide physical layer for both, access communication and sensor networks.
At University of Zagreb we invented an optical component, the modulation-averaging reflector, which reduces the penalty due to modulation of the seeding light and depolarizes the light oscillating in the cavity thereby stabilizing the extended resonator. This was the first step towards a future-proof optical access technology. Within this project we will fully develop and characterize systems based on extended cavity resonators with modulation averaging reflectors. We will also explore the use of modulation averaging concept in a novel communication optical source architecture based on wavelength re-use. Finally, the concept of extended cavity resonators will also be implemented in non-communication applications such as new optical sensor schemes. By completing this four-year project, we expect to make fundamental contribution to the science of lasers and fiber-optic components technology by demonstrating the operation and optimization of extended resonators based systems for communications and sensing.
- Principal Investigator (PI): Professor Zvonimir Šipuš, Ph.D.
- Host institution: University of Zagreb, Faculty of Electrical Engineering and Computing
- Project duration: 48 months
Project Team:
The research team consists of two full professors, Zvonimir Šipuš and Borivoj Modlic, two assistant professors Dubravko Babić and Marko Bosiljevac, three PostDocs Josip Lončar, Dario Bojanjac and Damir Muha, and one PhD student Marko Šprem.
Publications:
- Kildal, Per-Simon; Šipuš, Zvonimir; Yang, Jian; Maaskant, Rob. 2017. "Useful Physical Images and Algorithms for Vector Dyadic Green’s Functions in 3D Spatial, 2D Spectral and 1D Spectral Domains for Solving Multilayer and Multiregion Field Problems." IEEE antennas & propagation magazine, 59, 4: 106-116.
- Šprem, Marko; Babić, Dubravko. 2017. “Accurate estimate and measurement of continuous-wave noise in filtered incoherent light.” Applied Optics, 56, 6: 1724-1729. [PDF]
- Bosiljevac, Marko; Downing, John; Babić, Dubravko. 2016. “Reaching <100 ppm/K output intensity temperature stability with single-color light-emitting diodes.” Applied Optics, 55, 32: 9060-9066.
- Skrivervik, Anja; Bosiljevac, Marko; Šipuš, Zvonimir. Propagation Considerations for Implantable Antennas // Proceedings of the 11th European Conference on Antennas and Propagation (EUCAP2017). Paris, 19-24. 03. 2017.
- Bosiljevac, Marko; Šipuš, Zvonimir; Skrivervik, Anja; Trajkovikj, Jovanche; Fuchs, Benjamin. Improving the efficiency of implantable antennas // Proceedings of the 22nd ICECom Conference , Dubrovnik, 19-21. 09. 2016.
- Marko Bosiljevac, Benjamin Fuchs, Anja Skrivervik, Zvonimir Šipuš, Study of Wearable WBAN Antenna Properties Based on Spherical Body Model // Proceedings EuCAP2016, European Conference on Antennas and Propagation, Davos, Switzerland, 10-15 April 2016.
- Marko Bosiljevac, Dubravko Babić, Zvonimir Šipuš, Temperature-stable LED-based light source without temperature control // Proceedings SPIE 9754, Photonic Instrumentation Engineering III San Francisco, California, United States : SPIE, 2016.
- Marko Šprem, Dario Bojanjac, Marko Bosiljevac, Tin Komljenović, Damir Muha, Dubravko Babić, and Zvonimir Šipuš //Self-Seeded WDM-PON for Next Generation Broadband Access Networks, ELMAR 2015, pp. 85-88, ISBN: 978-953-184-209-9, Zadar 2015.
- Marko Sprem, Dubravko Babic, Marko Bosiljevac, Zvonimir Sipus, Temperature dependence of injection-locked Fabry-Pérot laser emission in WDM-PON architectures, 38th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO), 2015 , Pages: 74 - 78.
- Marko Šprem, Tin Komljenović, Dubravko Babić, Zvonimir Šipuš, Colorless optical sources for fiber-optic access networks of new generation, Proceedings ELMAR-2014, Zadar 2014.,pp. 261-264
Patents:
- Šprem, Marko; Babić, Dubravko. 2017. "Wavelength tuning of Fabry-Perot lasers in spectrum-sliced optical links" US patent No. 9, 692, 517 B1 [PDF]
- Komljenović, Tin; Babić, Dubravko; Šipuš, Zvonimir. 2017. "Optical-coupler based modulation-averaging structures for self-seeded colorless WDM-PON" US patent No. 9, 667, 026 B2 [PDF]
- Šprem, Marko; Babić, Dubravko. 2017. "Tunable transceivers for colorless spectrum-sliced WDM passive optical networks" US patent No. 9, 628, 175 B2 [PDF]
- Babić, Dubravko; Komljenović, Tin; Šipuš, Zvonimir. 2017. "Wavelength-reuse fiber-optic transmitters" US patent No. 9, 614, 622 B2 [PDF]
- Bosiljevac, Marko; Babić, Dubravko. 2017. "Light sources with highly stable output intensity" US patent No. 9, 605, 999 B2 [PDF]