Patents
The generation of intellectual property for the industry has produced several patents concerning new advanced photonic systems.
Photoneco provides customers with the generation of intellectual property suitable for patent applications.
Photoneco’s portfolio includes international patents of photovoltaic systems, advanced optical transceivers, high speed fiber transmission systems, photometric instruments:
US App. 17/815270, inventors: M. Zitelli, S. Wabnitz, title: “Mode-division multiplexed fiber Raman amplifier system and method”, date: Aug. 9, 2022.
The invention relates to a system and method in which at least one digital optical signal is transmitted in a multimode optical fiber, experiencing Raman amplification in the fiber core, after being mode-division multiplexed together with several pump beams with lower wavelength.
US 7398022 B2, inventor: M. Zitelli, title: “Optical return-to-zero phase-shift keying with improved transmitters”, date: Jul. 8, 2008.
Novel RZ-DQPSK (Return to Zero – Differential Quadrature Phase Shift Keying) transmitter incorporating only a single Mach-Zehnder dual-drive electro-optical modulator. Simulated performance is basically the same as for the more complex Nortel/Bookham transmitter based on three Mach-Zehnder modulators.
Besides, the proposed transmitter is more keen to applications with two polarization multiplexed transmitters, thereby nearly doubling the span reachable on a standard G.652 fiber with equal capacity.
Reference:
M. Zitelli, Patent no. US 7398022 B2, Jul. 2008.
M. Zitelli, SM_RZ_DQPSK_WhitePaper.pdf.
US 7349636 B2, inventor: M. Zitelli, title: “Optical phase and intensity modulation with improved transmitters”, date: Mar. 25, 2008.
New patented optical modulation formats based on Phase and Intensity Modulation (PhIM), particularly suitable for ultra-dense wavelength division multiplexing (up to 1.6 bit/s/Hz spectral efficiency). One typical application is the long-haul WDM transmission with 80 Gb/s optical channels spaced down to 100 GHz apart, implemented using low bandwidth and cost-effective optical and electrical components (a single optical modulator is required).
Reference:
M. Zitelli, Patent no. US 7349636 B2, Mar. 2008.
US 2003014646 A1 and ITRM2002056, inventor: M. Zitelli, title: “Combined phase and intensity modulation in optical communication systems”, app. publ. date: Aug. 7, 2003.
A previous version of the PhIM transmitter described above. Uses two distinct optical modulators.
Reference:
M. Zitelli, Patent app. publication no. US-2003-0147646-A1, Aug. 2003.
ITRM2002A0223 A1, inventor: M. Zitelli, title: “Long distance optical communication system with increased tolerances to nonlinear effects”
An advanced fiber transmission system with improved dispersion map, characterized by low optical losses, reduced signal timing jitter and increased tolerances to optical nonlinear effects.
US 2011032519 A1 and ITRM2007A0679 A1, inventors: A. Coletti, L. Piccari, M. Zitelli, title: “System for detecting the inclination of light sources, in particular of Precision Approach Slope Indicators of an airport runway”, app. publ. date: Feb. 10, 2011.
A photometric system specially designed to perform the fully automatic measurement of the alignment parameters of Precision Approach Path Indicator lights (PAPI), used in the airfields for safe aircraft landing.
Reference:
A. Coletti, L. Piccari, M. Zitelli, Patent app. publication no. US-2011032519-A1, Feb. 2011.