Results 11 to 20 of about 8,190,383 (300)

Polarization-mode interferometry in birefringent single-mode fibers [PDF]

open access: yesOptics Letters, 1987
An interferometric technique was used to investigate the relative phase delay between polarization modes in birefringent single-mode fibers. Polarization-mode dispersion is directly deduced from the measurements of relative phase delay at different wavelengths.
Thévenaz, Luc   +2 more
openaire   +5 more sources

Low-Threshold 795 nm Oxide-Confined Distributed Feedback Lasers With Surface Gratings

open access: yesIEEE Photonics Journal, 2023
795 nm oxide-confined distributed feedback (DFB) lasers have been developed. The oxide-confined structure is used to realize lateral optical and current confinement, and the first-order surface gratings offer the frequency selectivity for single ...
Pingping Qiu   +4 more
doaj   +1 more source

Single-Mode ZBLAN Fiber Couplers [PDF]

open access: yesEPJ Web of Conferences, 2022
We demonstrate single-mode ZBLAN optical fiber couplers. A controlled tapering procedure leads to coupling ratios of 5%/95% and 14%/86% at a wavelength of 2200 nm, with insertion losses of 1.6 dB and 1.8 dB, respectively.
Rezaei Mohsen   +3 more
doaj   +1 more source

Single mode and polarization independence in the strained silicon-on-insulator rib waveguides [PDF]

open access: yesHemijska Industrija, 2008
In this paper we investigate the most popular silicon waveguide structures in the form of a silicon-on-insulator (SOI) rib waveguide. Single mode and birefringence free conditions in these relatively small waveguides are discussed and the influence of ...
Milošević Milan M.   +2 more
doaj   +1 more source

Broadband single-mode microfiber coupler for OCT [PDF]

open access: yes, 2009
We present a bi-conical microfiber coupler (MFC) with a specifically designed transition region as an efficient tool to filter higher-order modes in multimode waveguides.
Jung, Y.   +2 more
core   +2 more sources

Optical fiber flowmeter based on a single mode-multimode-single mode structure

open access: yesFrontiers in Sensors, 2022
Single mode-Multimode-Single mode (SMS) sensors have been attracted a relevant attention because of their simple manufacturing, their capability of sensing different quantities, and their enhanced sensitivity compared to the most common fiber optic ...
Massimo Olivero   +4 more
doaj   +1 more source

Evaluating single-mode nonclassicality [PDF]

open access: yesPhysical Review A, 2020
Quantifying nonclassicality of a bosonic mode is an important but challenge task in quantum optics. Recently, the first nonclassicality measure based on the concept of operational resource theory has been proposed [Phys. Rev. Research 2, 023400 (2020)], which shows several crucial properties as a resource for quantum metrology.
Wenchao Ge, M. Suhail Zubairy
openaire   +2 more sources

Design and Simulation of Low-Threshold Miniaturized Single-Mode Nanowire Lasers Combined with a Photonic Crystal Microcavity and Asymmetric Distributed-Bragg-Reflector Mirrors

open access: yesNanomaterials, 2020
A low-threshold miniaturized single-mode nanowire laser operating at telecommunication wavelengths was proposed and simulated. The device was constructed by combining a single InGaAs nanowire with a photonic crystal microcavity and asymmetric distributed-
Chao Wu   +5 more
doaj   +1 more source

Stable Multi-Wavelength Thulium-Doped Fiber Laser With Two Cascaded Single-Mode-Four-Mode-Single-Mode Fiber Interferometers

open access: yesIEEE Access, 2021
We propose and experimentally demonstrate a multi-wavelength thulium-doped fiber laser using two cascaded single-mode-four-mode-single-mode (SFS) fiber interferometers and a 150-m-long highly nonlinear fiber.
Ying Guo   +9 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

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