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Stimulated by the non-Hermitian nature of micro- and nanophotonic systems, modal interaction has been proposed to play a more essential role in controlling lasing actions. Here we demonstrate its impact on mode management in microcavity lasers. Single-mode laser emission with extinction ratio above 10 dB has been obtained in twin-microdisks with a radius about 40 µm. Unlike conventional single-mode...
We report the first gridless networking field trial with flexible spectrum switching nodes over 620 km field fibre links. Successful transport, spectrum switching and defragmentation achieved for mixed line signals including 555G and coherent 100G.
This paper describes experimental demonstration of 50GHz ROADM tolerance for a realtime, single-carrier, 127-Gb/s coherent PM-QPSK system. 10 WSSs are cascaded over 1000km NDSF and <;0.5dB OSNR penalty is measured for the worst case. Cascading limit is also predicted.
We demonstrate experimentally penalty-free transmission of 127-Gb/s coherent PM-QPSK signals through 10 cascaded 50-GHz commercial WSS over 1500-km SMF. Simulation results show that more than 40 cascades of such 50-GHz liquid-crystal based WSS is feasible.
This paper presents a generalized framework that characterizes multi-tier resource dependency and operators' diversity policies in transport networks. The framework enables the design of systematic approaches toward SRLG development for optical transport networks.
A 4 times 4 integrated SOA switch performs routeing and wavelength-conversion without additional active components. 0.6 dB penalty is achieved for 5 Gb/s wavelength-conversion, with 7 Gb/s error-free operation in this un-optimised device.
A novel Quantum Dot monolithically integrated 1×8 switch is shown to provide robust routing of data at 10Gb/s modulation rates. Two cascaded switches providing, 1×64 functionality, operate with a power penalty of only 0.9dB.
The robustness of an integrated 2times2 quantum-dot switch is investigated for low penalty operation. Near penalty free operation of <0.2 dB is demonstrated for IPDR of over 8 dB, highlighting its potential for systems applications.
We report a study of the cascadability of QD-SOAs in a recirculating loop, showing that it is possible to cascade 15 SOAs before error free operation is lost. Furthermore, a monolithically integrated QD-SOA based add-drop switch is reported which exhibits very low (<0.1dB) path dependent switching power penalty
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