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Mode-resolved gain analysis and lasing in multi-supermode multi-core fiber laser

Clémence Jollivet, Arash Mafi, Daniel Flamm, Michael Duparré, Kay Schuster, Stephan Grimm, Axel Schülzgen
2014 Optics Express  
Multi-core fibers (MCFs) with coupled-cores are attractive largemode area (LMA) specialty fiber designs that support the propagation of a few transverse modes often called supermodes (SMs).  ...  To date, the use of MCF as gain media has focused on lasers that operate in only one selected SM, typically the lowest order in-phase SM, which considerably limited the potential of these multi-core structures  ...  Supermodes in coupled-cores fiber An all-solid 7-cores design embedded in a hexagonal-shaped cladding was selected.  ... 
doi:10.1364/oe.22.030377 pmid:25606966 fatcat:ltkeqszk5zaurp7uy6lytgjfye

Ultrasensitive twin-core photonic bandgap fiber refractive index sensor

Wu Yuan, Graham E. Town, Ole Bang
2009 2009 14th OptoElectronics and Communications Conference  
. >1.4×10 -7 RIU refractive index unit (RIU), by measuring the coupling wavelength shift.  ...  We propose a microfluidic refractive index sensor based on new polymer twin-core photonic bandgap fiber (PBGF).  ...  As demonstrated in figure3.a and 3.b, the core-guided supermodes have a presence in the high-index rods in PBGF, so the filed distributions in the rods play a key Figure 3 , the Ex field distribution  ... 
doi:10.1109/oecc.2009.5219053 fatcat:2xefgzm3argstpearmzmtrk4bi

High Sensitivity Strain Sensors Using Four-Core Fibers through a Corner-Core Excitation

Lina Suo, Ya-Pei Peng, Cheng-Kai Yao, Shijie Ren, Xinhe Lu, Nan-Kuang Chen
2022 Micromachines  
A weakly-coupled multicore fiber can generate supermodes when the multi-cores are closer to enter the evanescent power coupling region.  ...  The fan-in and fan-out couplers were used to carry out light coupling between singlemode fibers and the individual core of the FCFs.  ...  In contrast, the fiber sensors, especially the strain sensors, using TFCFs with asymmetric field distribution of the supermodes, have not yet been reported.  ... 
doi:10.3390/mi13030431 pmid:35334723 pmcid:PMC8949566 fatcat:cll4nblpdbak7h6ke3ss4kakie

Supermodes in Coupled Multi-Core Waveguide Structures

Cen Xia, M. Amin Eftekhar, Rodrigo Amezcua Correa, Jose Enrique Antonio-Lopez, Axel Schulzgen, Demetrios Christodoulides, Guifang Li
2016 IEEE Journal of Selected Topics in Quantum Electronics  
Higher order supermodes are observed for the first time in a coupled few-mode three-core fiber system using the S 2 imaging method.  ...  In addition, we show that higher order supermodes in coupled few-mode multi-core waveguide arrays can be strongly affected by angle-dependent couplings, leading to different modal field profiles.  ...  Such study can help predict the mode behavior in various coupled multi-core waveguides, including single-mode or fewmode coupled multi-core fibers [10] , [11] , directional couplers or the slow-tapering  ... 
doi:10.1109/jstqe.2015.2479158 fatcat:qximbqb26zfjdmpke352mvleee

Nanomechanical Optical Fiber with Embedded Electrodes Actuated by Joule Heating

Zhenggang Lian, Martha Segura, Nina Podoliak, Xian Feng, Nicholas White, Peter Horak
2014 Materials  
Nanomechanical optical fibers with metal electrodes embedded in the jacket were fabricated by a multi-material co-draw technique.  ...  We demonstrate optical switching between the two fiber cores by Joule heating of the electrodes with as little as 0.4 W electrical power, thereby demonstrating an electrically actuated all-fiber microelectromechanical  ...  Acknowledgments We gratefully acknowledge support for this work from the Engineering and Physical Sciences Research Council (EPSRC) through funding for the EPSRC Centre for Innovative Manufacturing in  ... 
doi:10.3390/ma7085591 pmid:28788148 pmcid:PMC5456168 fatcat:36fsxna2g5fwrozmyricddpjlq

Holey fiber mode-selective couplers

Gaetano Bellanca, Nicolas Riesen, Alexander Argyros, Sergio G. Leon-Saval, Richard Lwin, Alberto Parini, John D. Love, Paolo Bassi
2015 Optics Express  
Directional mode coupling in an asymmetric holey fiber coupler is demonstrated both numerically and experimentally for the first time.  ...  The measurements are compared with the simulation results.  ...  Their E y field distributions have the same overall pattern as the other pair of supermodes. Each set of supermodes interfere, hence allowing for power exchange between the respective cores.  ... 
doi:10.1364/oe.23.018888 pmid:26367552 fatcat:6fe4nmf2knhfzhuqr3bfn7qtku

Simultaneous Sensing of Refractive Index and Temperature with a Supermode Interferometer

Jose Angel Flores-Bravo, Ruben Fernandez, Jose Enrique Antonio-Lopez, Joseba Zubia, Axel Schulzgen, Rodrigo Amezcua Correa, Joel Villatoro
2021 Journal of Lightwave Technology  
We demonstrate that the supermode interferometer here proposed can be useful to measure the thermo-optic coefficient of a sample.  ...  Index Terms-Multicore fiber sensors, supermode interferometers, optical fiber sensors, interferometers, dual parameter sensors, refractometers, thermo-optic coefficient.  ...  It consists of fusion splicing a segment of coupled core optical fiber to a conventional single mode fiber.  ... 
doi:10.1109/jlt.2021.3113863 fatcat:3ldi2o7apjagjhfrarqhvfp6wa

High Sensitivity Fiber Refractive Index Sensors Based on Asymmetric Supermodes Interference in Tapered Four Core Fiber

Lina Suo, Haimiao Zhou, Ya-Pei Peng, Fan Yang, Hsiang-Chen Chui, Nan-Kuang Chen
2022 Photonics  
We demonstrate high sensitivity fiber refractive index (RI) sensor based on asymmetric supermode interferences in tapered four core fiber (TFCF).  ...  Originally, the power coupling occurred between its two neighboring cores first and these three cores are grouped to produce supermodes.  ...  However, most of the MCFs are very different from the traditional singlemode fibers (SMF), not only in the physical core distributions but also in their fundamental optical properties.  ... 
doi:10.3390/photonics9010045 fatcat:g4mhcyshpvbwlonnj6oav77h4a

Design of narrow band-pass filters based on the resonant-tunneling phenomenon in multi-core photonic crystal fibers

Kunimasa Saitoh, Nikolaos J. Florous, Masanori Koshiba, Maksim Skorobogatiy
2005 Optics Express  
The objective of the present paper is to introduce and numerically demonstrate the operation of a novel band-pass filter based on the phenomenon of resonant tunneling in multi-core photonic crystal fibers  ...  The proposed narrow band-pass filter can be employed in various applications such as all fiber bandpass/bandstop filtering.  ...  Wavelength-selective fiber devices such as fiber filters have become important elements in optical fiber communications and optical fiber measurements.  ... 
doi:10.1364/opex.13.010327 pmid:19503248 fatcat:6owjgxlsevezzikya54pfylshe

Non-proximity resonant tunneling in multi-core photonic band gap fibers: An efficient mechanism for engineering highly-selective ultra-narrow band pass splitters

Nikolaos J. Florous, Kunimasa Saitoh, Tadashi Murao, Masanori Koshiba, Maksim Skorobogatiy
2006 Optics Express  
The objective of the present investigation is to demonstrate the possibility of designing compact ultra-narrow band-pass filters based on the phenomenon of non-proximity resonant tunneling in multi-core  ...  The proposed ultra-narrow band-pass filter can be employed in various applications such as all-fiber bandpass/bandstop filtering and resonant sensors.  ...  An important element in all-optical fiber communication systems and all-optical fiber measurements is apparently a wavelength-selective fiber device such as a fiber filter.  ... 
doi:10.1364/oe.14.004861 pmid:19516644 fatcat:himrlfxjuvh7dnslg3b5vzjzey

Asymmetric Y junctions in silicon waveguides for on-chip mode-division multiplexing

Jeffrey B. Driscoll, Richard R. Grote, Brian Souhan, Jerry I. Dadap, Ming Lu, Richard M. Osgood
2013 Optics Letters  
Directional mode coupling in an asymmetric holey fiber coupler is demonstrated both numerically and experimentally for the first time.  ...  The measurements are compared with the simulation results.  ...  This work was performed in part at the Optofab node of the Australian National Fabrication Facility (ANFF) using Commonwealth and NSW State Government funding.  ... 
doi:10.1364/ol.38.001854 pmid:23722767 fatcat:ddjju3djvzdn7hysuzhfxksasu

Temperature-Dependent Group Delay of Photonic-Bandgap Hollow-Core Fiber Tuned by Surface-Mode Coupling [article]

Yazhou Wang, Zhengran Li, Fei Yu, Meng Wang, Ying Han, Lili Hu, Jonathan Knight
2021 arXiv   pre-print
Surface modes (SM) are highly spatially localized modes existing at the core-cladding interface of photonic-bandgap hollow-core fiber (PBG-HCF).  ...  When coupling with SM, the air modes (AM) in the core would suffer a higher loss despite being spectrally within the cladding photonic bandgap, and would be highly dispersive around the avoided crossing  ...  Introduction In a solid-core silica optical fiber, the thermal-optic effect, thermal expansion and elastic-optic effect (due to the thermal stress) altogether contribute to a strong dependence of modal  ... 
arXiv:2109.04794v1 fatcat:a4wjlh2zdre7llqwafnpxflatm

Large Normal Dispersion Mode-Locked Erbium-Doped Fiber Laser

Mincheng Tang, Geoffroy Granger, Fabien Lesparre, Hongjie Wang, Kai Qian, Caroline Lecaplain, Jean-Louis Oudar, Yves Jaouen, Renaud Gabet, Dmitry Gaponov, Mikhail Likhachev, Thomas Godin (+2 others)
2019 Fibers  
This concept opens up new degrees of freedom in the design of mode-locked fiber lasers.  ...  We report on a passively mode-locked oscillator based on an erbium-doped dual concentric core fiber combining high normal dispersion and large mode area.  ...  The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.  ... 
doi:10.3390/fib7110097 fatcat:kv36o7tuk5bztocfyjtbnvgobq

Dual-Core Optical Fiber as Beam Splitter With Arbitrary, Tunable Polarization-Dependent Transfer Function

Nina Podoliak, Peter Horak
2017 Journal of Lightwave Technology  
We present the design of a microstructured dualcore optical fiber with integrated electrodes and filled with liquid crystals.  ...  The dual-core structure acts as a directional coupler whose properties depend on the liquid crystal alignment.  ...  An optical loss of the order of 2-3 dB/m was measured in such a fiber [10] .  ... 
doi:10.1109/jlt.2017.2729939 fatcat:dkerkqkwqjglhigj4cuo7zkbii

A Review of Microfiber-Based Temperature Sensors

2018 Sensors  
Additionally, they can perform in-situ measurements remotely and in harsh environments.  ...  Additionally, they can perform in-situ measurements remotely and in harsh environments.  ...  The modal optical paths depend on the coupling region length, fiber diameter at coupler waist and supermodes effective indices, which in turn are affected by the refractive index of the surrounding medium  ... 
doi:10.3390/s18020461 pmid:29401718 pmcid:PMC5855437 fatcat:tc655mj4czhpzlenfcad5dz2ma
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