Results 11 to 20 of about 2,390,699 (275)

Laser Linewidth Measurement Using an FPGA-Based Delay Self-Homodyne System

Photonics
Narrow-linewidth lasers play a crucial role in nonlinear optics, atomic physics, optical metrology, and high-speed coherent optical communications.
Fanqi Bu, Zhongan Zhao, Longfei Li, Cunwei Zhang, Tie Li, Yaoyao Qi, Jie Ding, Bingzheng Yan, Chen Zhao, Yulei Wang, Zhiwei Lu, Yu Ding, Zhenxu Bai   +12 more
doaj   +2 more sources

Frequency Noise Characterization of Narrow-Linewidth Semiconductor Lasers: A Bayesian Approach

IEEE Photonics Journal, 2023
We describe a Bayesian estimation approach to infer on the frequency noise characteristics of narrow-linewidth semiconductor lasers from delayed self-heterodyne beat note measurements.
Lutz Mertenskotter, Markus Kantner
doaj   +2 more sources

High-Precision Regulation of Nano-Grating Linewidth Based on ALD

Micromachines, 2022
A nano-grating standard with accurate linewidth can not only calibrate the magnification of nano-measurement instruments, but can also enable comparison of linewidths. Unfortunately, it is still a challenging task to control the linewidth of nano-grating
Yaxin Zhang, Chenying Wang, Weixuan Jing, Song Wang, Yujing Zhang, Liangliang Zhang, Yijun Zhang, Nan Zhu, Yunxiang Wang, Yifan Zhao, Qijing Lin, Zhuangde Jiang   +11 more
doaj   +1 more source

Cost efficient narrow linewidth laser transmitter for coherent detection [PDF]

, 2008
Authors present a cost efficient narrow linewidth laser transmitter for future coherent detection systems. The spectral purity of the laser allows the phase modulation of data signals at bit rates as low as 155 Mb ...
Kelly, Brian, Anandarajah, Prince M., Reid, Douglas A., Barry, Liam P., Ellis, A.D., Kaszubowska-Anandarajah, Aleksandra, Phelan, Richard, Mishra, A.K., Perry, Philip, O'Gorman, James   +9 more
core   +3 more sources

Characterization of a novel three-section tunable slotted fabry-perot laser [PDF]

, 2010
A novel three-section tunable slotted-Fabry-Perot laser has been examined. Characterizations of the linewidth, SMSR and RIN indicate that this type of laser may be a suitable source for dynamic networks employing advanced optical modulation ...
Smyth, Frank, J.H. Song, O'Brien, P., K. Shi, Roycroft, Brendan, Corbett, Brian, Song, J.H., F. Smyth, B. Roycroft, Reid, Douglas A., Barry, Liam P., P. O’Brien, D. Reid, B. Corbett, F. H. Peters, O\u27Brien, P., Shi, Kai, Peters, F.H., L. P. Barry   +18 more
core   +3 more sources

Tunable passively Q-switched ultranarrow linewidth erbium-doped fiber laser

Results in Physics, 2020
A tunable passively Q-switched erbium-doped fiber laser with ultranarrow linewidth is proposed and demonstrated. With the single wall carbon nanotubes (SWCNTs) as the passive Q-switch, the ultranarrow linewidth laser operation is realized based on ...
M.Z. Zulkifli, F.D. Muhammad, M.F. Mohd Azri, M.K. Mohd Yusof, K.Z. Hamdan, S.A. Samsudin, M. Yasin   +6 more
doaj   +1 more source

Discrete mode laser diodes with ultra narrow linewidth emission <3kHz [PDF]

, 2008
Ex-facet, free-running ultra-low linewidth (
Kelly, Brian, B. Cai, J. O'Gorman, Stopford, Jennifer, Phelan, Richard, Perry, Philip, M. Rensing, Barry, Liam P., O\u27Gorman, J., Kaszubowska-Anandarajah, Aleksandra, B. Kelly, C. Herbert, O'Gorman, James, Rensing, Marc, Anandarajah, Prince M., A. Kaszubowska-Anandarajah, R. Phelan, Cai, B., O'Gorman, J., O\u27Carroll, John, P. Perry, J. Stopford, P. Anandarajah, Jones, D., D. Jones, J. O'Carroll, Herbert, C., O'Carroll, John, L. P. Barry   +28 more
core   +2 more sources

Discrete mode laser diodes with very narrow linewidth emission [PDF]

, 2007
Ex-facet, free-running low linewidth (~100 kHz), single mode laser emission is demonstrated using low cost, regrowth-free ridge waveguide Discrete Mode Fabry Pérot laser diode chips.
Kelly, Brian, Rensing, Marc, Wendelboe, J., O'Gorman, J., Phelan, Richard, O\u27Carroll, John, Perry, Philip, Jones, D., Watts, C.B., Guignard, Celine, Barry, Liam P., Herbert, C., O\u27Gorman, J., O'Carroll, John, Kaszubowska-Anandarajah, Aleksandra, O'Gorman, James   +15 more
core   +2 more sources

A Selectable Single-Mode Erbium Fiber Laser With Mach-Zehnder Interferometer and Rayleigh Injection Scheme

IEEE Photonics Journal, 2022
In the paper, a hybrid Mach-Zehnder interferometer (MZI) and Rayleigh backscattering (RB) injection is designed and applied in the erbium-doped fiber (EDF) ring laser configuration.
Chien-Hung Yeh, Li-Hung Liu, Han-Shin Ko, Yi-Ting Lai, Chi-Wai Chow   +4 more
doaj   +1 more source

Spectral behavior of long wavelength VCSELs [PDF]

, 2008
For a long time, only a small wavelength range of Vertical-Cavity Surface-Emitting Lasers (VCSEL) was available. The current evolution in process technology allows the fabrication of long wavelength VCSEL that is interesting for Telecom systems because ...
Bacou, Alexandre, Rissons, Angélique, Mollier, Jean-Claude   +2 more
core   +1 more source