Results 71 to 80 of about 15,530 (219)

Spectral Peaked Optical Frequency Comb for Highly Sensitive Spectroscopy

Advanced Photonics Research, Volume 7, Issue 1, January 2026.
Optical frequency combs represent a breakthrough in metrology, and comb mode selection and power scaling are important issues for highly sensitive spectroscopy. This article reviews the development of a spectrally peaked optical frequency comb using the novel phenomenon of spectral peaking for highly sensitive spectroscopy.
Norihiko Nishizawa, Shotaro Kitajima, Hideki Tomita, Hisashi Abe   +3 more
wiley   +1 more source

GAIN AND NOISE FIGURE PERFORMANCE OF ERBIUM DOPED FIBER AMPLIFIERS (EDFA)

Electrica, 2004
Fiber loss is a fundamental limitation in realising long haul point-to-point fiber optical communication links and optical networks. One of the advanced technologies achieved in recent years is the advent of erbium doped fiber amplifiers (EDFAs) that has
A.Cem ÇOKRAK, Ahmet ALTUNCU
doaj   +2 more sources

Rayleigh-Based Raman Fiber Laser With Passive Erbium-Doped Fiber for Secondary Pumping Effect in Remote L-Band Erbium-Doped Fiber Amplifier

IEEE Photonics Journal, 2012
This work focuses on a secondary pumping scheme for remote L-band erbium-doped fiber amplifier (R-EDFA) generated by integrating Rayleigh-based ultralong Raman fiber laser (ULRFL) with a section of passive erbium-doped fiber (EDF). A selective wavelength
M. H. Abu Bakar, F. R. Mahamd Adikan, M. A. Mahdi   +2 more
doaj   +1 more source

Constellation Shaping for WDM systems using 256QAM/1024QAM with Probabilistic Optimization [PDF]

, 2016
In this paper, probabilistic shaping is numerically and experimentally investigated for increasing the transmission reach of wavelength division multiplexed (WDM) optical communication system employing quadrature amplitude modulation (QAM).
Da Ros, Francesco, da Silva, Edson P., Forchhammer, Søren, Galili, Michael, Larsen, Knud J., Oxenløwe, Leif K., Yankov, Metodi P., Zibar, Darko   +7 more
core   +2 more sources

Ultra‐Compact Waveguide Couplers for All‐Silicon Terahertz Platform

Advanced Photonics Research, Volume 7, Issue 1, January 2026.
Compact all‐silicon couplers are developed to enable efficient mode conversion between dielectric and metallic hollow waveguides in integrated terahertz systems. By combining dielectric rod coupling and slot confinement, the design achieves strong mode matching within a very short footprint while maintaining mechanical robustness. The couplers preserve
Linxi Chen, Weijie Gao, Christophe Fumeaux, Withawat Withayachumnankul   +3 more
wiley   +1 more source

All-optical wavelength multicasting in quadruple resonance-split coupled Silicon microring cavity

, 2017
We demonstrate an all-optical four-channel wavelength multicasting in a coupled Silicon microring resonator system. The scheme is based on two-photon absorption induced free carrier dispersion in Silicon.
Pandey, Awanish, Selvaraja, Shankar Kumar   +1 more
core   +1 more source

Ultra‐Sensitive Dual‐Resonator Graphene Pressure Sensor with Temperature Self‐Compensation

Advanced Science, Volume 13, Issue 5, 27 January 2026.
This work presents a graphene resonator sensor based on a dual‐cavity interferometric scheme that achieves high sensitivity to pressure variations. Its lightweight and compact design enables drone‐based field experiments, underscoring the promise of graphene optomechanical devices for portable and scalable sensing applications.
Zhen Wan, Cheng Li, Zhengwei Wu, Pengcheng Zhao, Yang Liu, Wanting Li, Shangchun Fan, Wei Jin   +7 more
wiley   +1 more source

Amplification technology for spatial division multiplexing signals transmitted using multicore fibres

IET Optoelectronics
Amplification technologies needed for spatial division multiplexing (SDM) signal transmission have been reported, especially focusing on submarine systems, which have stricter requirements than terrestrial ones.
Hitoshi Takeshita
doaj   +1 more source

EDFA Anti-Irradiation Schemes for Inter-Satellite Optical DPSK Communication Systems

IEEE Photonics Journal, 2019
The uprising of rare-earth-doped fiber amplifier technology provides an effective solution to signal power compensation for interstellar optical communication systems, but significant signal power attenuation induced by spatial irradiation has ever been ...
Baoluo Yan, Haifeng Liu, Bo Liu, Jianguo Liu, Hao Zhang, Chengkun Yang, Zonghua Hu, Xiaolong Li   +7 more
doaj   +1 more source

Phase Symmetry Breaking of Counterpropagating Light in Microresonators for Switches and Logic Gates

Laser &Photonics Reviews, Volume 20, Issue 2, 22 January 2026.
Nonlinear interactions of light in Kerr microresonators break the symmetry of both the intensities and phases of the counter‐propagating optical fields. In this work, this is utilized to build an all‐optical switch and propose designs of all‐optical XOR and universal NAND gates realizable in integrated systems.
Alekhya Ghosh, Arghadeep Pal, Shuangyou Zhang, Lewis Hill, Toby Bi, Pascal Del'Haye   +5 more
wiley   +1 more source