Publication
Spatial and temporal characterization of semiconductor optical amplifiers and novel enhancement configurations
Publications associées (80)
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Combining optical gain in direct-bandgap III-V materials with tunable optical feedback offered by advanced photonic integrated circuits is key to chip-scale external-cavity lasers (ECL), offering wideband tunability along with low optical linewidths. Exter ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023Domain Imaging and Switching Dynamics in BaTiO3-Based Photonic Integrated Devices
Keeping up with our constantly connected lifestyle of instant messages and video streaming has its repercussions. Data centers have been gobbling up resources becoming a significant share of the energy used worldwide. To keep up with demand and curb the en ...
EPFL2023Chaotic microcomb-based parallel ranging
Tobias Kippenberg, Aleksandr Tusnin, Junqiu Liu, Anton Lukashchuk
The intrinsic random amplitude and phase modulation of 40 distinct lines of a microresonator frequency comb operated in the modulation instability regime are used to realize massively parallel random-modulation continuous-wave light detection and ranging, ...
NATURE PORTFOLIO2023Dual chirped microcomb based parallel ranging at megapixel-line rates
Tobias Kippenberg, Junqiu Liu, Maxim Karpov, Anton Lukashchuk
Photonic integrated systems can be harnessed for fast and efficient optical telecommunication and metrology technologies. Here the authors develop a dual-soliton microcomb technique for massively parallel coherent laser ranging that requires only a single ...
NATURE PORTFOLIO2022Performance of chip-scale optical frequency comb generators in coherent WDM communications
Optical frequency combs have the potential to become key building blocks of wavelength-division multiplexing (WDM) communication systems. The strictly equidistant narrow-band spectral lines of a frequency comb can serve either as carriers for parallel WDM ...
OPTICAL SOC AMER2020Sub-nanosecond Optical Switching Using Chip-Based Soliton Microcombs
Tobias Kippenberg, Kun Shi, Junqiu Liu, Maxim Karpov, Arslan Sajid Raja, Anton Lukashchuk
We demonstrate sub-nanosecond wavelength switching, using a chip-based soliton microcomb and a semiconductor optical amplifier-based wavelength selector. 50-Gbps PAM4 transmission is achieved with discrete components and 25-Gbps NRZ with a photonic integra ...
IEEE2020Light-Matter Interaction in III-Nitride Waveguides: Propagating Polaritons and Optical Gain
III-nitride waveguides featuring AlInN claddings and GaN/AlGaN quantum wells (QWs) offer promising perspectives for applications in many fields of short-wavelength photonics. Thanks to their nearly lattice-matched nature, these structures exhibit an excell ...
EPFL2018Versatile short-wave and mid-infrared sources based on wideband parametric conversion
The mid-infrared part of the optical spectrum is of high interest in a wide range of applications such as environmental gas monitoring, contaminant detection in the chemical, food or pharmaceutical industry, medical diagnosis, or defense and security. Rele ...
EPFL2017Erbium doped random fiber laser and fiber mixing effect
Luc Thévenaz, Camille Sophie Brès, Can Yao
We demonstrate an active random fiber laser by directly pumping a 100 m erbium-doped fiber at 980 nm wavelength, with a fiber loop mirror forming a half-open cavity. Random lasing with competing spectral modes in the range from 1535 nm to 1560 nm is achiev ...
2017