Results 11 to 20 of about 936 (145)
A Problem Analysis of RSOA-Based Optical Access [PDF]
Elektronika ir Elektrotechnika, 2016 Using WDM multiplexing is one of the ways to increase PON bandwidth. But as WDM-PON is still expensive and difficult administered, the idea of using a Reflective Semiconductor Optical Amplifier (RSOA) is proposed. It can be installed in WDM-PON ONU network devices.
Tervydis, Paulius, Jankuniene, Ruta
openaire +4 more sources
IEEE Photonics Journal, 2015 We proposed and experimentally demonstrated a wavelength-space division multiplexing (WSDM) optical access network architecture with centralized optical carrier delivery utilizing multicore fibers (MCFs) and adaptive modulation based on reflective ...
Zhenhua Feng +15 more
doaj +2 more sources
Build-up analysis of an RSOA-based self-seeded transmitter
2014 The European Conference on Optical Communication (ECOC), 2014 A different approach, focusing both on the power build-up and the optical spectrum build-up of the RSOA-based self-seeded transmitter, uncovers that steady-state is reached later than expected. Initial roundtrips are analysed to enlighten the mechanism of radiation formation from ASE.
MARAZZI, LUCIA +5 more
openaire +4 more sources
Highly-nonlinear RSOA RIN compression
2014 19th European Conference on Networks and Optical Communications - (NOC), 2014 It has been recently experimentally and theoretically demonstrated that three nonlinear operation regimes can be observed in reflective semiconductor amplifiers in relation to gain saturation and, consequently, in relation to the bleaching of the modulation portion of the injected signal while the injected power increases.
MARAZZI, LUCIA +5 more
core +5 more sources
A Review of Self-Seeded RSOA Based on WDM PON
Canadian Journal of Electrical and Computer Engineering, 2019 The colorless technology has been offered as a solution to decrease the cost in wavelength-division multiplexed passive optical network (WDM PON). The self-seeded reflective semiconductor optical amplifier (SS-RSOA) based on WDM PON has been proved to be a promising solution among colorless operations.
Nisa Nacar Cikan, Murat Aksoy
core +3 more sources
Discretely Tunable (2594, 2629, 2670 nm) GaSb/Si3N4 Hybrid Laser for Multiwavelength Spectroscopy
Laser &Photonics Reviews, Volume 17, Issue 12, December 2023., 2023 A discretely tunable GaSb/Si3N4 hybrid photonic integrated circuit (PIC) laser is introduced for multiwavelength spectroscopy of CO2, H2S, and H2O. It emits mW‐level power at 2670.42, 2629.12, and 2594.27 nm. Wavelength tuning and switching are based on a novel architecture employing cascaded Mach–Zehnder interferometers and a distributed Bragg, which ...
Samu‐Pekka Ojanen +6 more
wiley +1 more source
Laser &Photonics Reviews, Volume 17, Issue 7, July 2023., 2023 A miniaturized high‐performance integrated laser exhibiting broad wavelength tuneability near a 2.6 µm wavelength region is demonstrated. The laser consists of a Si3N4 photonic integrated circuit incorporating a tunable reflector and a AlGaInAsSb/GaSb quantum‐well gain element.
Samu‐Pekka Ojanen +6 more
wiley +1 more source
Nanophotonics, Volume 11, Issue 18, Page 4183-4196, September 2022., 2022 Abstract In this paper we show a novel design of high Q‐factor silicon nitride (SiN) 1D photonic crystal (PhC) cavities side‐coupled to curved waveguides, operating with both silica and air cladding. The engineering of the etched 1D PhC cavity sidewalls angle allows for high Q‐factors over a wide range of upper cladding compositions, and the ...
Simone Iadanza +8 more
wiley +1 more source
Fully integrated electrically driven optical frequency comb at communication wavelength
Nanophotonics, Volume 11, Issue 13, Page 2989-3006, June 2022., 2022 Abstract To meet the high demand of data transmission capacity, optical communications systems have been developed. In order to increase the channel numbers for larger communication bandwidth, multi‐mode lasers and laser arrays can be used. As an alternative coherent light source, optical frequency comb (OFC) contains multi‐wavelength signal, and hence
Nanxi Li +6 more
wiley +1 more source
Responsiveness to left‐prefrontal tDCS varies according to arousal levels
European Journal of Neuroscience, Volume 55, Issue 3, Page 762-777, February 2022., 2022 tDCS inconsistent findings may be due to the interplay between the level of induced cortical excitability and unaccounted state‐dependent functional factors. We aimed at verifying whether the behavioural effects induced by a common tDCS montage were influenced by the participants' arousal levels.
Marco Esposito +4 more
wiley +1 more source