Results 31 to 40 of about 36,052 (268)
IEEE Photonics Journal, 2016 An asymmetrical thin-core long-period fiber grating (ATC-LPFG) cascaded with an inline Mach–Zehnder interferometer (MZI) for dual-parameter sensing has been demonstrated. In addition, bending direction is also determined at the same time.
Wenjun Ni +8 more
doaj +1 more source
Low-Cost High-Sensitivity Strain and Temperature Sensing Using Graded-Index Multimode Fibers [PDF]
, 2007 We report a low-loss, low-cost high-sensitivity all-fiber strain and temperature sensor based on mode interference in graded-index multimode fibers. Blueshifts with strain and temperature sensitivities of 18.6 pm/microstrain and 58.5 pm/°C have been ...
Liu, Yu, Wei, Li
core +2 more sources
Multimode interference couplers
Integrated Photonics Research, 1991 Experimental results are presented on a new type of planar (Multimode Interference) coupler. Two-mode interference (TMI) couplers (Fig. la) were reported already in 1977 as an alternative to weak synchronous couplers,1 they are shorter and less sensitive to variations in the fabrication process, and thus have a potential for application without ...
Soldano, L.B. +4 more
openaire +2 more sources
Femtosecond Soliton Erbium-Doped Fiber Laser With a Symmetrical GIMF–SIMF–GIMF Saturable Absorber
IEEE Photonics Journal, 2019 A femtosecond soliton erbium-doped fiber ring laser with the symmetrical saturable absorber (SA) of graded index multimode fiber-step index multimode fiber-graded index multimode fiber (GIMF-SIMF-GIMF) is proposed and proved.
Qian-Chao Wu +7 more
doaj +1 more source
Two-Photon Polarization Interference for Pulsed SPDC in a PPKTP Waveguide [PDF]
, 2008 We study the spectral properties of Spontaneous Parametric Down Conversion in a periodically poled waveguided structure of KTP crystal pumped by ultra-short pulses. Our theoretical analysis reveals a strongly multimode and asymmetric structure of the two-
Christine Silberhorn +5 more
core +2 more sources
Multimode interference filter to solve degradation on coupler common-mode rejection [PDF]
, 1998 After quantifying degradation of a common mode rejection ratio (CMRR) 3dB-coupler due to excitation of TE01 mode, a novel compact circuit including multimode interference (MMI) coupler+bend+MMI+filter (CBF) is proposed.
Aramburu, Cándido +3 more
core +2 more sources
Tunable multimode interference coupler
Electronics Letters, 2007 An electrically tunable multimode interference (MMI) coupler/splitter is demonstrated. The device operates by modifying the phase of the multiple self-images that are formed around the midpoint of the MMI structure. This provides a simple way to fine-tune the 50:50 output power split ratio or other arbitrary ratio.
May-Arrioja, D. A. +3 more
openaire +2 more sources
Design of Power-Splitter With Selectable Splitting-Ratio Using Angled and Cascaded MMI-Coupler [PDF]
, 2018 A concept of power splitter with selectable splitting-ratios is proposed based on two multimode interference (MMI) sections connected by a phase-shifting region, in which phase-matching conditions can be fulfilled by using a simple angled section or ...
Jiang, W., Rahman, B. M.
core +1 more source
IEEE 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
Two-photon interference of multimode two-photon pairs with an unbalanced interferometer
, 2003 Two-photon interference of multimode two-photon pairs produced by an optical parametric oscillator has been observed for the first time with an unbalanced interferometer. The time correlation between the multimode two photons has a multi-peaked structure.
Goto, Hayato +4 more
core +1 more source