Results 21 to 30 of about 1,290,697 (278)

Single-Mode Fiber Microlens with Controllable Spot Size [PDF]

open access: yes, 1991
A novel method for fabricating microlenses on tapered single-mode fibers is shown to be able to control the lens spot size. The fiber cladding is first symmetrically tapered by etching it with an evaporating ammonium bifluoride solution.
Barnard, Chris W., Lit, John W.Y.
core   +2 more sources

Monolithically Integrated Multiwavelength Laser With Optical Feedback: Damped Relaxation Oscillation Dynamics and Narrowed Linewidth

open access: yesIEEE Photonics Journal, 2018
An InP-based, monolithically integrated multiwavelength laser with optical feedback is presented. We demonstrate the performance of the dual-wavelength operation. Single-mode lasing is obtained for each of the two channels within a temperature range from
Dan Zhao   +5 more
doaj   +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

High-Speed Micro-Grooving of Metal by Angled Irradiation of Single-Mode CW Fiber Laser

open access: yesApplied Sciences, 2020
Laser micro-grooving has excellent potential to improve the surface properties of metals. In this study, high-speed micro-grooving of the surfaces of mild steel SS400 and aluminum alloy A1050 was investigated using a single-mode continuous-wave fiber ...
Tatsuhiko Sakai   +4 more
doaj   +1 more source

Large Mode Area Single Mode Fiber with a Twisted Polygon-Shaped Core

open access: yesPhotonics, 2022
We present numerical studies on twisted polygon-shaped core fibers for achieving single mode operation with a large mode area propagation in this paper. These large mode area fibers can achieve single mode operation due to twisting-induced high losses to
Kexiong Sun   +4 more
doaj   +1 more source

Entanglement induced by a single-mode heat environment [PDF]

open access: yes, 2001
A thermal field, which frequently appears in problems of decoherence, provides us with minimal information about the field. We study the interaction of the thermal field and a quantum system composed of two qubits and find that such a chaotic field with ...
A. Peres   +15 more
core   +2 more sources

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

Wide field interferometric imaging with single-mode fibers [PDF]

open access: yes, 2002
Classical single-mode fiber interferometers, using one fiber per aperture, have very limited imaging capabilities and small field of view. Observations of extended sources (resolved by one aperture) cannot be fully corrected for wavefront aberrations ...
Berger   +12 more
core   +2 more sources

Application of nanophotonics to the next generation of surface-emitting lasers

open access: yesNanophotonics, 2017
Novel trends and concepts in the design and fabrication of vertical cavity surface-emitting lasers (VCSELs) and their integration in optical networks and implementation in integrated photonics applications are discussed.
Ledentsov Nikolay N.   +4 more
doaj   +1 more source

Sensitivity Enhancement in Low Cutoff Wavelength Long-Period Fiber Gratings by Cladding Diameter Reduction

open access: yesSensors, 2017
The diameter of long-period fiber gratings (LPFGs) fabricated in optical fibers with a low cutoff wavelength was be reduced by hydrofluoric acid etching, enhancing the sensitivity to refractive index by more than a factor of 3, to 2611 nm/refractive ...
Ignacio Del Villar   +8 more
doaj   +1 more source

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