Results 261 to 270 of about 221,572 (291)

Mode Amplification and Nonlinear Mode Conversion in Few Mode Fibers

Frontiers in Optics 2016, 2016
We demonstrate phase sensitive and insensitive amplification and nonlinear mode conversion in few mode fibers by studying the four wave mixing effect.
TRICHILI, ABDERRAHMEN, Zghal, Mourad, PALMIERI, LUCA, SANTAGIUSTINA, MARCO   +3 more
openaire   +2 more sources

Mode measurement of few-mode fibers by mode-frequency mapping

Optics Letters, 2018
Since few-mode fibers (FMFs) have great potential as the new transmission media for optical communications, the ability to distinguish different fiber modes is essential. Most of the traditional schemes do not yield phase information, or are limited by beam size and mechanical requirements.
Hailong Zhou, Qiuchi Zhu, Wenhai Liang, Guangze Zhu, Yanyun Xue, Su Chen, Lei Shen, Mian Liu, Jianji Dong, Xinliang Zhang   +9 more
openaire   +2 more sources

Orthogonality breaking through few-mode optical fiber

Applied Optics, 2016
Polarization sensing and imaging through optical fibers is a technological challenge motivated by promising applications for in vivo, in situ polarimetric endoscopy for biomedical diagnosis. Among the recent approaches proposed to solve this issue, the depolarization/dichroism sensing by polarization orthogonality breaking (DSOB) technique was shown to
Parnet, François, Fade, Julien, Alouini, Mehdi   +2 more
openaire   +2 more sources

Two-Mode Coupling Model in a Few Mode Fiber

Оптика и спектроскопия, 2013
A phenomenological two-mode coupling model in few mode fibers (FMF) is developed. It uses a mode coupling coefficient and the differential modal delay as the input parameters and the split-step approach. The model is consistent with the experimental results demonstrating distributed mode coupling effects in FMF and may be used for multipath ...
N. A. Kaliteevskiy, A. E. Korolev, K. S. Koreshkov, V. N. Nazarov, P. M. Sterlingov   +4 more
openaire   +1 more source

Few-Mode Energy-Managed Soliton Fiber Laser

2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
We present an all-anomalous mode-locked laser architecture combining a few-mode gain fiber with single-mode passive fibers. This hybrid fiber laser generates high-energy pulses whose features are controlled by an intracavity spectral filter. Using a 1.7-nm filter bandwidth, the laser delivers 2.5-ps pulses of 39-nJ energy and 15.6-kW peak power ...
Mostafa I. Mohamed, Mincheng Tang, Aurélien Coillet, Vincent Couderc, Philippe Grelu   +4 more
openaire   +2 more sources

Mode coupling in few-mode large-mode-area fibers

SPIE Proceedings, 2014
We present an experimental study on mode coupling characteristics of few-mode large-mode-area (LMA) fibers, which are widely used in high power fiber lasers. The modal power allocation is measured by modal decomposition of the nearfield intensity profile of the output beam.
Changgeng Ye, Joona Koponen, Ville Aallos, Laeticia Petit, Ossi Kimmelma, Teemu Kokki   +5 more
openaire   +1 more source

Fused Fiber Mode Couplers for Few-Mode Transmission

IEEE Photonics Technology Letters, 2012
Space-division multiplexing (SDM) based on few-mode fibers has been studied as a promising technique to increase fiber capacity. In this letter, we show optimal design and simulation of a low-loss fused fiber mode coupler, one of the most critical enabling components for SDM transmission systems.
null An Li, null Xi Chen, A. A. Amin, W. Shieh   +3 more
openaire   +1 more source

Complex imaging for detecting few-mode fiber modes

Advanced Photonics 2017 (IPR, NOMA, Sensors, Networks, SPPCom, PS), 2017
We present coherent imaging for acquiring two-dimensional optical image that recovers amplitude and phase simultaneously. With coherent imaging, we detect few-mode-fiber modes with high extinction-ratio, and perform mode decomposition and differential mode delay measurement.
Yifei Wang, Xi Chen, Jian Fang, An Li, Qi Yang, William Shieh   +5 more
openaire   +2 more sources

Few-mode fiber technology for mode division multiplexing

Optical Fiber Technology, 2017
Abstract We review recent progress on few-mode fiber (FMF) technologies for mode-division multiplexing (MDM) transmission. First, we introduce fibers for use without and with multiple-input multiple-output (MIMO) digital signal processing (DSP) to compensate for modal crosstalk, and briefly report recent work on FMF for use without/with a MIMO DSP ...
Takayoshi Mori, Taiji Sakamoto, Masaki Wada, Takashi Yamamoto, Kazuhide Nakajima   +4 more
openaire   +1 more source

Few-mode optical fiber for mode-division multiplexing

Optical Fiber Technology, 2011
Abstract This paper describes the group delay difference and mode coupling of few-mode fiber for “uncoupled” mode division multiplexing. Optical mode separation is compatible with few-mode fiber. It has complementary characteristics with the MIMO technique.
Hirokazu Kubota, Toshio Morioka
openaire   +1 more source