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This paper presents a 5G mobile x-haul architecture composed of central offices with OLT programmable S-BVTs, small-DC and Ethernet switching, and edge nodes located in the 5G cell-site cabinets with cloudlet, Ethernet aggregation and elastic ONT to meet the specific 5G mobile x-hauling requirements.
We experimentally evaluate multi-path RMSA algorithms that minimize the differential delay and the required buffer capacity. A proof-of-concept of multi-path routing, provisioning and transmission with a GMPLS-controlled Flexi-grid DWDM setup using S-BVTs is also presented.
An automatic frequency control design is proposed and demonstrated. It is based on a high-speed optical VCO. An overall design has been performed, based on simulation results. Also, loop delay and phase noise impacts have been evaluated. Frequency discriminator and VCO proposed have been experimentally characterized, showing an agreement with simulation results.
We propose an Ultra-Dense Wavelength Division Multiplex Passive Optical Network (UD-WDM-PON) based on homodyne detection in a totally transparent ring-tree implementation. It is based on time switching phase diversity homodyne detection and local oscillator reuse for upstream transmission. 4 GHz spaced 1 Gb/s streams were correctly received in a 30 km experimental deployment serving 1024 users.
We demonstrate a full-duplex DPSK SCM PON operating at 2.5 Gbps/1.25 Gbps bitrates, with RSOA ONU and simplified scheme. It achieves low sensitivity and is implemented with low-cost components.
Experimental demonstration of heterodyne optical phase-locked loop (oPLL), using simplest optics, is carried out. For the first time, the effect of loop delay has been experimentally characterized and compared directly to the most significant oPLL configurations. It demonstrates a linewidth tolerance of 6.5 MHz if FEC codes are used.
A novel PSK receiver technique is proposed based on electronic-driven diversity, without optical hybrid and polarization beam splitters. It achieves high tolerance to phase noise and feasible implementation with commercial lasers
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