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Leif Katsuo Oxenløwe
Researcher at Technical University of Denmark
Publications - 568
Citations - 8925
Leif Katsuo Oxenløwe is an academic researcher from Technical University of Denmark. The author has contributed to research in topics: Wavelength-division multiplexing & Photonics. The author has an hindex of 40, co-authored 539 publications receiving 6749 citations. Previous affiliations of Leif Katsuo Oxenløwe include Centre for Ultrahigh Bandwidth Devices for Optical Systems & University of Copenhagen.
Papers
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Journal ArticleDOI
Compact high-efficiency vortex beam emitter based on a silicon photonics micro-ring
Shimao Li,Yunhong Ding,Xiaowei Guan,Heyun Tan,Zhichao Nong,Lin Wang,Lin Liu,Lidan Zhou,Chunchuan Yang,Kresten Yvind,Leif Katsuo Oxenløwe,Siyuan Yu,Xinlun Cai +12 more
TL;DR: A high-efficiency vortex beam emitter based on a silicon micro-ring resonator integrated with a metal mirror capable of generating vortex beams with a high efficiency and small divergence angle is proposed and demonstrated.
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Ultrafast all-optical clock recovery based on phase-only linear optical filtering.
TL;DR: A novel technique for all-optical clock recovery from RZ OOK data based on phase-only filtering is reported, significantly enhancing the recovered clock quality and energy-efficiency compared to the use of a Fabry-Perot filter.
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A novel phase-locking-free phase sensitive amplifier based Regenerator
N. K. Kjoller,Kasper Meldgaard Roge,Pengyu Guan,Hans Christian Hansen Mulvad,Michael Galili,Leif Katsuo Oxenløwe +5 more
TL;DR: A novel PSK regenerator based on phase sensitive amplification without active phase-locking is proposed and demonstrated, applied to regenerate a phase noise degraded 10-Gbit/s DPSK signal, improving receiver sensitivity by 3.5 dB.
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Unidirectional frequency conversion in microring resonators for on-chip frequency-multiplexed single-photon sources
Mikkel Heuck,Jacob Gade Koefoed,Jesper B. Christensen,Yunhong Ding,Lars Hagedorn Frandsen,Karsten Rottwitt,Leif Katsuo Oxenløwe +6 more
TL;DR: In this paper, the authors proposed a design for on-chip multiplexed single-photon sources that probabilistically generate photon pairs across many frequency modes of a ring resonator and subsequently convert them to a single frequency.
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320 Gbps to 10 GHz sub-clock recovery using a PPLN-based opto-electronic phase-locked loop
Cédric Ware,Leif Katsuo Oxenløwe,Fausto Gomez Agis,Hans Christian Hansen Mulvad,Michael Galili,Sunao Kurimura,Hirochika Nakajima,Junichiro Ichikawa,Didier Erasme,Anders Clausen,Palle Jeppesen +10 more
TL;DR: It is presented successful extraction of a 10 GHz clock from single-wavelength 160 and 320 Gbps OTDM data streams, using an opto-electronic phase-locked loop based on three-wave mixing in periodically-poled lithium niobate as a phase comparator.