Results 31 to 40 of about 435,527 (304)

Toward a compact fibered squeezing parametric source

open access: yes, 2018
In this work, we investigate three different compact fibered systems generating vacuum squeezing that involve optical cavities limited by the end surface of a fiber and by a curved mirror and containing a thin parametric crystal.
Brieussel, Alexandre   +4 more
core   +1 more source

Comparative study of the effective single mode operational bandwidth in sub-wavelength optical wires and conventional single-mode fibers [PDF]

open access: yes, 2009
We present the first experimental comparison of effective single mode operation bandwidth in sub-wavelength optical wires (SOWs) and conventional single-mode fibers (SMFs).
Brambilla, Gilberto   +2 more
core   +1 more source

Tunable Single-Longitudinal-Mode High-Power Fiber Laser

open access: yesInternational Journal of Optics, 2012
We report a novel CW tunable high-power single-longitudinal-mode fiber laser with a linewidth of ∼9 MHz. A tunable fiber Bragg grating provided wavelength selection over a 10 nm range. An all-fiber Fabry-Perot filter was used to increase the longitudinal
Jonas K. Valiunas, Gautam Das
doaj   +1 more source

New Design of Optical Filters Based on Single Mode-Multimode-Single Mode Fiber Structure for Optical Fiber Communication Systems [PDF]

open access: yesEngineering and Technology Journal, 2011
In this paper, a design of optical filters based on single mode-multimode-single mode fiber structure (SMS) is demonstrated. The multimode interference effect can be utilized to design wavelength-selective devices with high extinction ratio. The proposed
Jassim Kadim Hmood
doaj   +1 more source

Chromatic Dispersion Measurements of Single-Mode Fibers, Polarization-Maintaining Fibers, and Few-Mode Fibers Using a Frequency Domain Method

open access: yesPhotonics, 2023
Chromatic dispersion is an important fiber attribute affecting transmission performance over optical fibers. Various chromatic dispersion measurement methods have been developed primarily for single-mode fibers.
Xin Chen   +3 more
doaj   +1 more source

All Solid Multistep-Index Core Large Mode Area Single-Mode Fiber

open access: yesIEEE Photonics Journal
In this paper, a large-mode-area (LMA) single-mode fiber based on multistep-index core structure is proposed. The multistep-index core increases the mode field area (MFA).
Yulai She   +4 more
doaj   +1 more source

Wavelength-Spacing Switchable Dual-Wavelength Single Longitudinal Mode Thulium-Doped Fiber Laser at 1.9 μm

open access: yesIEEE Photonics Journal, 2016
We propose and demonstrate a spacing switchable dual-wavelength single longitudinal mode thulium-doped fiber laser at 1.9 μm. The fiber laser employs a ring cavity and a segment of 4-m thulium-doped fiber pumped by a 1563 nm laser. A
Wanzhuo Ma   +7 more
doaj   +1 more source

Efficient quantum dot single photon extraction into an optical fiber using a nanophotonic directional coupler [PDF]

open access: yes, 2011
We demonstrate a spectrally broadband and effcient technique for collecting photoluminescence from a single InAs quantum dot directly into a standard single mode optical fiber.
Badolato, A.   +5 more
core   +2 more sources

Quantum dot single-photon emission coupled into single-mode fibers with 3D printed micro-objectives

open access: yesAPL Photonics, 2020
User-friendly single-photon sources with high photon-extraction efficiency are crucial building blocks for photonic quantum applications. For many of these applications, such as long-distance quantum key distribution, the use of single-mode optical ...
Lucas Bremer   +12 more
doaj   +1 more source

Sensing properties of graphene-oxide-functionalized single-mode–no-core–single-mode fiber structure

open access: yesResults in Physics, 2021
A series of single-mode–no-core–single-mode (SNS) optical fiber sensing structures with different thicknesses of graphene oxide (GO) coating were fabricated and tested with glycerin and magnetic fluid solutions.
Shaokang Yan   +4 more
doaj   +1 more source

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