Research Research groups Member of: Photonic Systems, Circuits and Sensors Group Silicon Photonics Research projects Active projects One-Stop-Shop Open Access to Photonics Innovation Support for a Digital Europe Researchers: Sponsor: European Union Layered Materials Research Foundry (LMRF) Researchers: Sponsor: EPSRC CORNERSTONE 2.5 Researchers: Sponsor: EPSRC C-PIC Researchers: Completed projects H2020 ACTPHAST4R - UCL- Callum Littlejohns Researchers: Sponsor: European Union Rapid assessment of drinking water using waveguide-enhanced on-chip Raman Spectroscopy Researchers: Sponsor: Research England Publications 119 publications Page 8 of 12 Germanium-on-silicon waveguides operating at mid-infrared wavelengths up to 8.5 μm Milos Nedeljković, Jordi Soler Penadés, Vinita Mittal, Ganapathy Senthil Murugan, Ali Z. Khokhar, Callum Littlejohns, Lewis G. Carpenter, Corin B. E. Gawith, James S. Wilkinson & Goran Z. Mashanovich, 2017, Optics Express, 25(22), 27431-27441 DOI: 10.1364/OE.25.027431 Type: article Mid-infrared Ge-on-Si electro-absorption modulator Tiantian Li, Miloš Nedeljković, Nannicha Hattasan, Ali Z. Khokhar, Scott A. Reynolds, Stevan Stanković, Mehdi Banakar, Wei Cao, Zhibo Qu, Callum G. Littlejohns, Jordi Soler Penadés, Katarzyina Grabska, Lorenzo Mastronardi, David J. Thomson, Frederic Y. Gardes, Graham T. Reed, Hequan Wu, Zhiping Zhou & Goran Z. Mashanovich, 2017 DOI: 10.1109/GROUP4.2017.8082169 Type: conference Laser-assisted material composition engineering of SiGe planar waveguides Antoine Runge, Yohann Franz, Callum Littlejohns, Katarzyna, Monika Grabska, Sakellaris Mailis, Frederic Gardes & Anna Peacock, 2017 Type: conference Germanium and Silicon Photonic Integrated Circuits for the Mid-Infrared G. Z. Mashanovich, C. G. Littlejohns, D. J. Thomson, W. Cao, Tiantian Li, A. Z. Khokhar, S. Stanković, J. Soler Penadés, Z. Qu, C. J. Mitchell, F. Y. Gardes, A. C. Peacock, A. P. Knights & M. Nedeljković, 2017 DOI: 10.1109/ICTON.2017.8024869 Type: bookChapter SiGe bandgap tuning for high speed Eam Lorenzo Mastronardi, Mehdi Banakar, Ali Khokhar, Thalía Domínguez Bucio, Callum Littlejohns, Goran Mashanovich & Frederic Gardes, 2017, ECS Transactions, 77(6), 59-63 DOI: 10.1149/07706.0059ecst Type: article Ultra-compact MMI-based beam splitter demultiplexer for the NIR/MIR wavelengths of 1.55 μm and 2 μm Mohamed Said Rouifed, Callum Littlejohns, Tina Guo Xin, Haodong Qiu, Jordi Soler Penadés, Miloš Nedeljković, Zecen Zhang, Chongyong Liu, David Thomson, Goran Mashanovich, Graham Reed & Hong Wang, 2017, Optics Express, 25(10), 10893-10900 DOI: 10.1364/OE.25.010893 Type: article SiGe bandgap tuning for high speed Eam Lorenzo Mastronardi, M. Banakar, A.Z. Khokhar, Thalía Domínguez Bucio, Callum Littlejohns, N. Bernier, E. Robin, C. Rouviere, H. Dansas, N. Gambacorti, G.Z. Mashanovich & F.Y. Gardes, 2017 Type: conference Germanium mid-infrared photonic devices Goran Mashanovich, Colin Mitchell, Jordi Soler Penadés, Ali Khokhar, Callum Littlejohns, Wei Cao, Zhibo Qu, Stevan Stanković, Frederic Gardes, Taha Ben Masaud, Harold Chong, Vinita Mittal, Ganapathy Senthil Murugan, James Wilkinson, Anna Peacock & Miloš Nedeljković, 2017, Journal of Lightwave Technology, 35(4), 624-630 DOI: 10.1109/JLT.2016.2632301 Type: article Ion implantation in silicon for photonic device trimming Milan M. Milošević, Xia Chen, Wei Cao, David J. Thomson, Graham T. Reed, Callum G. Littlejohns & Hong Wang, 2017 DOI: 10.1109/CLEOPR.2017.8118916 Type: conference Low propagation loss Ge-on-Si waveguides and their dependency on processing methods P. Anantha, Lin Zhang, Wei Li, Xin Guo, Haodong Qiu, Gang Yih Chong, Callum G. Littlejohns, Miloš Nedeljković, Jordi Soler Penadés, Goran Z. Mashanovich, Hong Wang & Chuan Seng Tan, 2017 DOI: 10.1109/CLEOPR.2017.8118738 Type: conference Pagination Previous page Previous … 6 7 8 9 10 … Next page Next