Results 31 to 40 of about 886 (238)
25-GHz-Spaced DWDM-PON With Mitigated Rayleigh Backscattering and Back-Reflection Effects
IEEE Photonics Journal, 2013 A novel 25-GHz-spaced dense wavelength-division multiplexing passive optical network (DWDM-PON) is proposed to improve the utilization of wavelength resource and mitigate the Rayleigh backscattering (RB) and back-reflection effects.
Zhao Zhou +5 more
doaj +1 more source
IEEE Photonics Journal, 2015 In this investigation, we propose and demonstrate a stable and wavelength-tunable self-injected reflective semiconductor optical amplifier (RSOA)-based laser by using the Faraday rotator mirror (FRM) and the fiber mirror (FM) serving as a reflected ...
Yu-Fu Wu +4 more
doaj +1 more source
MDM-TDM PON Utilizing Self-Coherent Detection-Based OLT and RSOA-Based ONU for High Power Budget
IEEE Photonics Journal, 2016 A cost-effective mode-division-multiplexing and time-division-multiplexing passive optical network (MDM-TDM PON) utilizing a self-coherent detection for upstream signal at optical line terminal (OLT) and a high-gain reflective semiconductor optical ...
Yuanxiang Chen +11 more
doaj +1 more source
RSOA Intensity Modulator Frequency Chirp-Enhanced Optical OFDM PON Performance
IEEE Photonics Journal, 2015 A reflective semiconductor optical amplifier intensity modulator (RSOA-IM) frequency chirp considerably increases the system frequency response of an intensity-modulation and direct-detection (IMDD) PON system over the passband signal spectral region ...
B. Y. Cao +5 more
doaj +1 more source
Hybrid integrated external cavity laser with a 172-nm tuning range
APL Photonics, 2022 Chip-scale lasers with a wide tunable range and a narrow linewidth have rich applications in optical communications, sensing, and light detection and ranging systems.
Yuyao Guo +6 more
doaj +1 more source
Off-set Filtering Effect in SOA Based Optical Access Network [PDF]
Radioengineering, 2016 In-line and reflective semiconductor optical amplifiers (SOA and RSOA) can be effectively utilized as external optical intensity modulators. However the limited modulation bandwidth affects the application possibilities, because next generation access ...
E. Udvary
doaj
Applied Sciences, 2017 We present a comparative study of the capacity increase brought by bit- and power-loading discrete multi-tone (DMT) modulation for low-cost colorless transmitters.
Simon Arega Gebrewold +4 more
doaj +1 more source
IEEE Access, 2019 For the first time up to our knowledge, a centralized-light-source two-way eight-level pulse amplitude modulation (PAM8)/four-level pulse amplitude modulation (PAM4) free-space optical (FSO) communication with parallel optical injection-locked vertical ...
Wen-Shing Tsai +4 more
doaj +1 more source
All optical Reflective Semiconductor Optical Amplifier based half adder
, 2020 Postgraduate Department of Physics, B. B. College Asansol, Asansol-713 303, West Bengal, India Department of Physics, National Institute of Technology Durgapur, Durgapur-713 209, West Bengal, India E-mail: klmukherjee003@gmail.com Manuscript received online 04 December 2020, accepted 24 December 2020 All optical Reflective Semiconductor Optical ...
Maji, Kajal +2 more
openaire +2 more sources
Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals
Advanced Engineering Materials, EarlyView.This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao +2 more
wiley +1 more source