Wavelength-controlled external-cavity laser with a silicon photonic crystal resonant reflector [PDF]
, 2016 This work was partially funded by the EPSRC, Scottish Enterprise, and the European Research Council under the Starting Grant 337508.We report the experimental demonstration of an alternative design of external-cavity hybrid lasers consisting of a III-V ...
Debnath, Kapil +4 more
core +1 more source
Compatibility between coherent reflective burst-mode PON and TWDM-PON physical layers [PDF]
, 2014 We discuss the compatibility between reflective PON architectures and the recently defined ITU-T G.989.1 TWDM-PON. Focusing on the upstream, we experimentally demonstrate that, by using burst-mode coherent detection at OLT, reflective PON can achieve the
Cho +10 more
core +1 more source
Improvement of modulation bandwidth in multisection RSOA for colorless WDM-PON
Optics Express, 2009 We demonstrated two-section reflective semiconductor optical amplifier (RSOA) with dramatic improvement of small-signal modulation bandwidth above 10 GHz as colorless source for wavelength division multiplexed-passive optical network (WDM-PON). The device provides the fiber-to-fiber gain of 22.8 dB, 3-dB amplified spontaneous emission (ASE) bandwidth ...
Hyun-Soo, Kim +5 more
openaire +2 more sources
Subsystems for future access networks [PDF]
, 2010 Current evolution and tendencies of Telecom Networks in general and more specifically optical Metro and Access Networks and their convergence are reported. Based on this evolution, a set of research lines are foreseen regarding subsystems and devices as:
Avramopoulos, Hercules +15 more
core +2 more sources
Turkish Validity and Reliability Study of Resilience Scale for Older Adults
Psikiyatride Güncel YaklaşımlarObjective: The Resilience Scale for Older Adults (RSOA) is designed to assess the ability of older individuals to cope with difficulties, utilize social and family support, and evaluate their level of life satisfaction.
Zeynep Seray Akyol +1 more
doaj +1 more source
LTE transmission exploiting pulse width modulation in fibre optic links [PDF]
, 2017 Recently it has been demonstrated that pulse width modulation (PWM) can represent a viable solution for the analog optical fronthaul alternative to standard radio over fibre, which still avoids the bandwidth expansion of the digital fronthaul.
Canziani, C. +7 more
core +1 more source
The data transfer technologies in optical access networks (FTTx) [PDF]
, 2009 Cílem této diplomové práce je popsat problémy spojené s návrhem FTTX sítí a přiblížit čtenáři problematiku datových přenosů v optických přístupových sítích typu PON. V úvodu jsou zmíněny jednotlivé technologie, které již v praxi fungují, a popsány výhody
Matušík, Lukáš
core
Characterization of uncooled RSOA for upstream transmission in WDM reflective PONs
Optics Express, 2012 We investigate on the uncooled RSOA driving parameters in WDM reflective PONs, focusing on an upstream path at 1.25 Gbit/s using pure binary modulation. We show how the optimal values change using direct-detection or self-coherent receivers. In particular, for the latter, the driving point optimization allows a gain of more than 3 dB in terms of ODN ...
S. Straullu +5 more
openaire +3 more sources
Frequency agile photonic integrated external cavity laser
APL PhotonicsRecent advances in the development of ultra-low loss silicon nitride integrated photonic circuits have heralded a new generation of integrated lasers capable of reaching fiber laser coherence.
Grigory Lihachev +12 more
doaj +1 more source
Investigation of the Effects of Chirped RZ Signals in Reducing the Transmission Impairments in R-SOA-Based Bidirectional PONs [PDF]
, 2011 Distributed and concentrated reflections represent the two main limitations in reflective-semiconductor optical amplifier (R-SOA)-based passive optical networks (PONs).
E. Ciaramella +3 more
core +1 more source