• Nanosecond passively Q-switched fibre laser using a NiS2 based saturable absorber 

  Li, Shi; Yin, Yu; Ouyang, Qiuyun; Ran, Guicang; Chen, Yujin; Lewis, Elfed; Farrell, Gerald; Tokurakawa, Masaki; Harun, Sulaiman Wadi; Wang, Pengfei (Optical Society of America, 2019)

  Q-switched pulse laser generation is successfully demonstrated in both Erbiumdoped fibre laser (EDFL) and Thulium-doped fibre laser (TDFL) cavities by employing Nickel disulfide (NiS2) as a saturable absorber (SA). ...
• Temperature-insensitive refractometer based on an RI-modulated singlemode-multimode-singlemode fibre structure 

  Wang, Pengfei; Zhang, Shuo; Wang, Ruoning; Farrell, Gerald; Zhang, Meng; Geng, Tao; Lewis, Elfed; Tian, Ke (2019)

  A temperature-insensitive refractometer based on a refractive index (RI)-modulated singlemode-multimode-singlemode (RMSMS) fibre structure is proposed and experimentally demonstrated. In this investigation, a combination ...
• Observing the viscous relaxation process of silica optical fiber at ~1000 C using regenerated fiber bragg grating 

  Cui, Zhiru; Gong, Jianhui; Wang, Chen; Che, Nana; Zhao, Yanshuang; Chai, Quan; Qi, Haifeng; Lewis, Elfed; Ren, Jing; Zhang, Jianzhong; Yang, Jun; Yuan, Libo; Peng, Gang-Ding (2019)

  A regenerated fiber Bragg grating (RFBG) in silica fiber was used to observe the viscous relaxation process of the host silica fiber at high temperatures of around 1000 C. Two factors, preannealing time and loaded tension, ...
• Airborne wind energy- a review 

  Salari, Mahdi Ebrahimi; Coleman, Joseph; Toal, Daniel (Springer, 2017)

  Airborne Wind Energy (AWE) is a new approach to harvest stronger wind streams at higher altitudes for renewable energy. This paper reviews recent developments in this field. Conventional wind energy and current constrains ...
• Multiple compound Tamm waves with Uller-Zenneck wave characteristics guided by dissipative dielectric defect in periodic multilayered isotropic dielectric material 

  Danyal, Muhammad; Maab, Husnul; Rahim, Arbab Abdur; Ali, Muhammad Mahmood (IOP Publishing, 2019)

  A canonical problem configured in three different arrangements of periodic multilayered isotropic dielectric material layers with a dissipative dielectric defect, to guide multiple compound Tamm waves with Uller–Zenneck ...
• Digital matched filtering (DMF) technique for the performance enhancement of few-mode fibre Bragg grating sensor 

  Zaini, Muhammad Khairol Annuar; Lee, Yen Sian; Lim, Kok-Sing; Ali, Muhammad Mahmood; Nazal, Nurul Asha Mohd; Ahmad, Harith (IEEE Computer Society, 2019)

  In this work, the digital matched filtering (DMF), a signal processing technique, has been proposed to identify the multiple peak wavelengths, more accurately from reflection spectra of etched few-mode fibre Bragg grating ...
• Treasured trash? A consumer perspective on small Waste Electrical and Electronic Equipment (WEEE) divestment in Ireland 

  Casey, Katherine; Lichrou, Maria; Fitzpatrick, Colin (Elsevier, 2019)

  Small Waste Electrical and Electronic Equipment (sWEEE) is a particularly problematic category of electronic waste. A growing body of research indicates that sWEEE tends to be either stockpiled or disposed of improperly ...
• High order mismatch shaping for low oversampling rates 

  O'Brien, Vincent; Mullane, Brendan (IEEE Computer Society, 2019)

  Delta Sigma data converters employing high order dynamic element matching (DEM) allow for accurate signal conversion in the presence of DAC mismatch. However, at low oversampling rates, current high order DEM decoders ...
• Largest enhancement of broadband near-infrared emission of Ni2+ in transparent nano-glass ceramics: using Nd3+ as sensitizer and Yb3+ as energy transfer bridge 

  Zhang, Yindong; Li, Xiaobo; Lai, Zhiqiang; Zhang, Runan; Lewis, Elfed; Izam Azmi, Asrul; Gao, Zhigang; Lu, Xiaosong; Chu, Yushi; Liu, Yanlei; Chai, Quan; Sun, Shiyu; Ren, Jing; Zhang, Jianzhong (American Chemical Society, 2019)

  An ultrabroadband near-infrared (NIR) emission of Ni2+ is demonstrated in a highly transparent nano-glass ceramic (nano-GC) containing Ga2O3 nanocrystals with 808 nm excitation of Nd3+. It is also shown that by adding ...
• An investigation into the effects of power supply ripple on mixed signal devices and counter measures thereof 

  Meehan, Patrick J. (University of Limerick, 2016)

  Precision instruments using mixed signal devices such as analog to digital converters (ADCs), digital to analog converters (DACs) and frequency synthesisers are sensitive to power supply noise and ripple associated with ...
• Weighted Item ranking for pairwise matrix factorization 

  Zhang, Haiyang; Ganchev, Ivan; Nikolov, Nikola S.; O'Droma, Máirtín (IEEE Computer Society, 2019)

  Recommendation systems employed on the Internet aim to serve users by recommending items which will likely be of interest to them. The recommendation problem could be cast as either a rating estimation problem which ...
• A validation study of a polymer optical fiber sensor for monitoring lumbar spine movement 

  Kam, Wern; O'Keeffe, Mary; O'Sullivan, Kieran; Mohammed, Waleed S.; O'Keeffe, Sinéad; Lewis, Elfed; Viphavakit, Charusluk (MDPI, 2019)

  This study aims to investigate the validity and reliability of a novel plastic optical fiber (POF) sensor, which was developed to measure the angles of flexion, extension and lateral bend at the lumbar region. The angles ...
• Enhanced near-infrared emission in Yb3+-Cr3+ codoped KZnF3 glass ceramics excited by a solar simulator 

  Wang, Xin; Li, Wenhao; Tian, Ke; Lewis, Elfed; Wang, Shunbin; Brambilla, Gilberto; Dong, Yongkang; Wu, Xiao; Wang, Pengfei (Elsevier, 2019)

  Cr3+-Yb3+ codoped bulk glass-ceramics containing KZnF3 nanocrystals are fabricated by thermal treatment of cast glass samples and characterized by X-ray diffraction and transmission electron microscopy. The luminescent ...
• Design and evaluation of high-speed operational amplifier designs using the negative Miller capacitance design technique 

  Zaidi, Muhaned Ali Hussein (University of Limerick, 2018)

  The operational amplifier (op-amp) is one of the most commonly used analogue circuits for analogue and mixed-signal Integrated Circuit (IC) designs. The op-amp is widely designed using a sub-micron Complementary ...
• Smart enhanced performance intervention ROVs control system advancements for marine work-class ROV manipulators 

  Sivčev, Satja (University of Limerick, 2018)

  This thesis describes a body of research work focused on the domain of marine robotics and underwater manipulator control systems in particular. Work-class marine ROVs equipped with hydraulic manipulators are widely used ...
• Real-time vision systems for underwater robotics: towards the automation of underwater inspection and intervention operations 

  Rossi, Matija (University of Limerick, 2018)

  This thesis describes a body of research work in the domain of underwater robotics, aimed towards improving performance and efficiency; and achieving partial or full autonomy in a wide range of inspection and intervention ...
• Plastic optical fibre based sensors for monitoring physiological parameters in clinical environments 

  Kam, Wern (University of Limerick, 2018)

  This dissertation focuses on a plastic optical fibre (POF) sensor based on intensity modulation for health monitoring applications in a modern clinical environment. The sensor is suitable for spine bending monitoring as ...
• Repurposing end of life notebook computers from consumer WEEE as thin client computers – a hybrid end of life strategy for the circular economy in electronics 

  Coughlan, Damian (University of Limerick, 2018)

  This PhD thesis presents an investigation into the feasibility of repurposing endof- life notebook computers as thin client computers. Repurposing is the identification of a new use for a product that can no longer be ...
• A novel security protocol attack detection logic with unique fault discovery capability for freshness attacks and interleaving session attacks 

  Jurcut, Anca; Coffey, Tom; Dojen, Reiner (IEEE Computer Society, 2017)

  This paper introduces a new logic-based technique for detecting security protocol weaknesses that are exploitable by freshness and interleaving session attacks. This technique is realised as a special purpose logic to be ...
• An isolated power factor corrected power supply utilizing the transformer leakage inductance 

  Conway, Thomas (IEEE Computer Society, 2018)

  The widespread use of electronic devices increases the need for compact power factor corrected power supplies. This paper describes an isolated power factor corrected power supply that utilizes the leakage inductance ...

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