Jianzhong Zhang

Jianzhong Zhang
Harbin Engineering University · College of Science

About

199
Publications
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1,259
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Introduction

Publications

Publications (199)
Article
In this paper, a review of recent studies on the optical fiber-based surface plasmon resonance (SPR) sensor and the sensitivity improvement based on specialty optical fibers and two-dimensional (2D) materials is given. The configurations and working principles of various SPR excitation methods are introduced. Several types of specialty optical fibe...
Article
Tm³⁺, capable of emitting blue upconversion luminescence, is generally excited by a single laser source. In this contribution, we design a dual-excitation strategy, using excitation at 800 and 980 nm simultaneously, to manipulate the upconversion properties of Tm³⁺. It is found that this dual-excitation strategy can enhance the upconversion intensi...
Article
The sensitivity of Fabry–Perot (FP) sensor is determined by the change of cavity length. To achieve high sensitivity, we employ supercontraction property of spider dragline silk (SDS) to fabricate a FP cavity, and the length of the cavity can change up to 99.9% of the initial cavity length. The cavity consists of two reflecting surfaces which are t...
Article
Suppression of the inner energy dissipation, related to the lattice phonons and inner defects, in lanthanide doped upconversion luminescent materials remains a formidable challenge. Herein, we reveal an energy cycling strategy capable of suppressing the inner energy dissipation in lanthanide doped upconversion nanocrystals. Yb³⁺ ions were introduce...
Article
Highly luminescent CsPbBr3 perovskite quantum dots (PQDs)-doped tellurite glasses are prepared by the cost-effective and reproducible melt-quenching and thermal heating method. The photoluminescence quantum yields (PLQYs) are significantly enhanced to 33.9% by glass structural modification and Ag doping. The enhancement mechanisms especially that r...
Article
A Zeonex based dual-channel optical fiber Surface Plasmon Resonance (SPR) sensor has been proposed in this paper for gaseous analytes in terahertz regime. The subwavelength porous polymer fiber is surrounded by two semicircular air hole channels and the SPR effect can be excited by the ferroelectric polyvinylidene fluoride (PVDF) layer coated on th...
Article
We propose and demonstrate a cascaded dual-channel fiber surface plasmon resonance (SPR) sensor based on a phase change material, Ge2Sb2Te5 (GST). This material may modulate the sensing bands of SPR to the infrared bands. We configure channel I with a 50 nm Au film and configure channel II with a 50 nm Au film and a 30 nm GST film. The experimental...
Article
The genetic algorithm (GA) method is used to demodulate the strain distribution of fiber Bragg grating (FBG), which improves the residual stress measurement accuracy of tube in the hole-drilling method. The accuracy of the method is verified by simulation and experiment. Compared with the traditional peak demodulation, the residual stresses error i...
Article
We utilize the supercontraction property of spider dragline silk (SDS) to fabricate a Fabry-Perot (FP) humidity sensor whose FP cavity length can change up to 61.87% of the initial cavity length. Therefore, the sensor has ultra-high humidity sensitivity (up to 23.14 nm/%RH), because the change of cavity length determines the sensitivity of FP senso...
Article
Three-dimensional (3D) printing or additive manufacturing (AM) is revolutionising manufacturing in many fields including photonic materials. As recent research shows, 3D printing could greatly facilitate the development of silica optical fibres (SOFs) of new material composition and structure designs that is very difficult with the existing manufac...
Article
An optical fiber-indium tin oxide (ITO) optoelectrode was proposed and first demonstrated in electrochemical luminescence (ECL) analyze. A transparent conductive ITO film was coated onto the surface of a bare optical fiber by magnetron sputtering. The optical fiber was realized as a working electrode and a detection device at the same time. Notably...
Article
In recent years, it has been a new topic to fabricate fiber optical tweezers probes by using photopolymers. However, this method requires coupling the laser into the fiber through a spatial optical path with strict laser and experimental environment requirements. It significantly limits the application scope of optical tweezers. This paper proposes...
Article
Based on the hole-drilling strain sensing method, a ring Fiber Bragg Grating (FBG) array is proposed to realize comprehensive and convenient measurement of residual stress for homogeneous or inhomogeneous materials. All FBG sensors are arranged tangentially along the edge of the ring. With the ring array around the drilled hole, more detailed infor...
Article
Full-text available
To date, the mechanisms of Er3+ upconversion luminescence via 980 and 1530 nm excitation have been extensively investigated; however, based on discussions, they either suffer from the lack of convincing evidence or require elaborated and time-consuming numerical simulations. In this work, the steady-state and time-resolved upconversion luminescence...
Article
We develop a fiber pH sensor using a spider dragline silk (SDS). SDS obtained from an Araneus Ventricosus is a pH-sensitive natural protein. We wrap the SDS on a tapered single-mode optical fiber (TSOF) to fabricate the sensing structure. The fiber taper is too thin to confine the laser propagating in the fiber, leading to the leakage of the strong...
Article
Full-text available
A novel optical fiber integrated optoelectrode was proposed and miniatured photoelectrochemical (PEC) sensor was realized. In the structure, transparent conductive oxide indium-tin-oxide (ITO) film and photocatalytic material are coated outside of one end of the optical fiber. This tiny optoelectrode first simultaneously realizes the light-guiding...
Article
As the size of research objects reaches the nanometer level, there is an increasing desire to trap and detect nanoparticles. However, the means to trap and study individual nanoparticles is not mature. Here, we propose and demonstrate a method for trapping a single nanoparticle stably and moving it in a three-dimensional space using a single-mode o...
Article
The spider dragline silk (SDS) has a supercontraction characteristic, which may cause the axial length of the SDS to shrink up to 50% when the SDS is wet or the relative humidity is higher than 58% RH. In this manuscript, we employ the supercontraction characteristic of the SDS to measure relative humidity. We connect two sections of a single-mode...
Preprint
Full-text available
Real-time color-tunable upconversion luminescence of lanthanide ions has recently attracted increasing attention. To date, at least two different excitation wavelengths are required to obtain tunable upconversion colors containing the three-primary-color components (Red-Green-Blue). In this work, for the first time, we demonstrate that it is possib...
Article
We propose and demonstrate a light-induced micro-vibrator that can perform an adjustable reciprocating vibration based on the Δα-typed photophoretic force. The vibration amplitudes and periods can be precisely controlled and modulated in real-time, and the maximum average restoring speed is as high as 23.26 μm/s. In addition, by using the self-heal...
Article
Full-text available
We propose and demonstrate an optical trap on the basis of a normal single-mode fiber (SMF), which is used to trap two particles in the axial direction at the same time without contact based on mode division multiplexing technology. We design and manufacture a tapered fiber probe. The LP11 mode beam is excited by docking a normal SMF to a 980 nm SM...
Article
A compact, low-loss, simply prepared all-fiber phase modulator based on the plasmonic absorption of gold nanoparticles decorated on the surface of non-adiabatic microfiber was demonstrated By applying 808nm pump laser of different powers to the phase modulator, the effective refractive index changes resulting in phase shift of the interference spec...
Article
This paper proposes and demonstrates an integrated optical fiber sensor, which combines Fabry-Perot interference (FPI) and surface plasmon resonance (SPR) to measure the thermo-optical coefficient of liquid samples. SPR is excited by the total reflection of light on the capillary fiber wall and the reflected light on the two reflective surfaces of...
Article
Thus far, Yb3+ has usually served as a sensitizer to improve energy harvesting in lanthanide ion based luminescent materials. Herein, besides the well accepted character as a sensitizer, we revealed a new role of Yb3+, namely an energy reservoir, to improve the upconversion efficiency of several lanthanide activators. The energy cycling between lan...
Article
Bending and rotation sensing based on high coherence interferometry in seven-core fiber (SCF) is proposed here for the first time. In the suggested scheme, distinct optical paths are formed from the selected cores, thus creating a very compact in-fiber Michelson interferometer. The interferometer consists of an in-line taper structure fabricated on...
Article
We present a new scheme of dual-core THz fiber for tunable polarization splitter based on the mode coupling theory. Each elliptical polymer core is modified with two elliptical air holes, which is helpful for high modal birefringence and low transmission loss. Due to different coupling lengths for x and y polarizations, the two orthogonal polarizat...
Article
The effect of the lead or erbium co-doping upon the spectroscopic properties has been systematically investigated through the analysis of the absorption and emission spectra of Bi doped fibre (BDF), Bi/Pb and Bi/Er co-doped fibre (BPDF and BEDF). All these BDFs have a broadband emission from 1000 nm to 1600 nm. The Pb or Er co-doping in BDFs will e...
Article
To date, color-tunable photon upconversion (UC) in a single nanocrystal (NC) still suffers from cumbersome structures. Herein, we prepared a compact two-layer NC with bright and high-purity red and green UC emission upon 980 and 1530 nm excitation, respectively. The effects of trace Tm3+ doping and inert-shell coating on the UC color and intensity...
Article
We propose a terahertz polarization splitter based on suspended dual-core fiber. Each core of the fiber is formed with two adherent subwavelength polymer tubes, which is helpful for a high modal birefringence. Due to the difference of coupling length between x and y polarizations, the proposed splitter can completely separate two orthogonal polariz...
Article
Transparent Ce3+-doped nano-glass composites (nano-GCs) embedded with pure and Gd3+-mixed KLaF4 nanocrystals (NCs) are prepared by a cost-effective and reproducible glass-making and thermal treatment method. The nano-GCs can be readily...
Article
A chirp compensation method of fiber Bragg grating (FBG) is proposed to improve the residual stress measurement accuracy in the hole-drilling method. The effects of the radii of the hole, the distance between the FBG and the hole, the Young’s modulus of the material and the residual stress on the FBG chirped spectra are analyzed. The relationship b...
Article
Full-text available
A highly birefringent square lattice terahertz (THz) photonic crystal fiber (PCF) coated with epsilon-near-zero (ENZ) material and doped with gain material is proposed for single polarization propagation. Due to introduction of the ENZ rings into square lattice, the large loss difference between the x-polarization mode and all other modes is obtain...
Article
Full-text available
We report a ReSe2 passively mode-locked composite YVO4/Nd:YVO4 laser at 1.06 μm, which can stably generate pure continuous-wave mode-locking (CWML) operation at watt-level output. ReSe2, as a new type of 2-D transition metal dichalcogenides (TMDs), has the features of weak-layered dependence, broadband saturable absorption, low modulation depth and...
Article
Full-text available
A liquid level sensor system based on dual tapers all‐fiber Mach‐Zehnder interferometer incorporating digital filtering is proposed for extended measurement range. Digital filtering technique is employed to selectively isolate beating of a particular dominant cladding mode, resulting a more consistent response in terms of spectra quality and wavele...
Article
3D printing is a disruptive technology that could revolutionise the fabrication of optical fibre by offering greater flexibility and diversity in material and structure designs. This paper reviews the recent research and development of material and fabrication techniques toward 3D printing-based polymer optical fibre (POF) and silica optical fibre...
Article
We propose and experimentally demonstrate a fiber-based Bessel optical trap for the simultaneous trapping of both high-refractive-index particle and a low-refractive-index particle. We obtain the Bessel beam by incident 980 nm beam into the designed integrate fiber structure, which is fabricated by coaxial splice a section of step-index multimode f...
Article
We develop a novel humidity sensor by wrapping the spider dragline silk (SDS) on a tapered single-mode fiber (TSMF) to configure a multimode interference (MMI) structure and obtain the optical spectrum. The TSMF is fabricated by heating a single-mode fiber (SMF) while applying tension. SDS is employed as humidity-sensing material, thus the SDS wrap...
Article
A new type of Ni²⁺-doped dual-phase glass ceramics (GCs) is developed by a simple one-step thermal-induced crystallization process. The GCs thus obtained are embedded simultaneously with hybrid ZnGa2O4 and ZnF2 nanocrystals (NCs). When pumped by a readily available 808 nm laser diode, an ultra-broad near-infrared (NIR) emission in a range of 1100−2...
Article
Achieving controllable heating in deep tissue is of vital importance for photothermal therapies. In this work, we developed single-band red upconversion (UC) nanoparticles (NPs) as self-monitored photothermal probes. The excitation (∼800 nm) and emission (∼652 nm) of the developed UCNPs are both located in the first biological window (I-BW), reduci...
Article
We propose and demonstrate the measurement of the particle size using an all-fibre interference approach via a single fibre tweezer with a coaxial core fibre. The coaxial core fibre has an external annular core and a centre core. The external annular core is used to trap the microparticle and the centre core sends and receives interference signals...
Article
To date, real-time adjusting the emitting color with high brightness remains a formidable challenge. In this work, compact core-shell upconversion nanocrystals emitting real-time tunable colors were presented. On the basis of rational design to suppress the energy dissipation and color crosstalk, highly intense green and red lights are respectively...
Article
A new scheme of modified multi-trench fiber (MTF) with chromatic dispersion management is proposed. In this structure, the low refractive-index trenches are broken along the x and y axes by four gaps. The rod-arrays, composed of high Ge-doped rods, are arranged symmetrically in the horizontal gaps. The numerical investigations indicate that the mod...
Article
Full-text available
We propose and demonstrate an improved multimode interference (MMI) structure based on a spider dragline silk (SDS) for relative humidity (RH) sensing. We configure the MMI structure by connecting a section of single-mode fiber, a section of no-core fiber (NCF), and a section of single-mode fiber sequentially, and then obtain the interference spect...
Article
Full-text available
Photonic media containing hybrid noble metal–dielectric nanocrystals (NCs) represent a wonderland of nanophotonics, with a myriad of uncharted optical functions yet to be explored. Capitalizing on the unique phase separation and spontaneous formation of Au-metal NCs in a gallosilicate glass, we fabricated Ni2+-doped transparent nanoglass composites...
Article
Photothermal therapy (PTT) has been widely used for the treatment of various medical conditions due to their noninvasive and cost-effective advantages. However, the light absorption and scattering of the biosystem limits the deep tissue applications of conventional PTT probes. In this paper, we proposed the sub-10 nm NaNdF4 nanocrystals with both i...
Article
We present, to the best of our knowledge, a new scheme of broadband single-polarization optical fiber with high extinction ratio based on surface plasmon resonance (SPR). The double-hole optical fiber with a Ge-doped core is modified by integrating the stacks of conductive and dielectric layers to support SPR. The strong couplings between the guide...
Article
In this article, we present a self-calibrated absolute thickness measurement method for opaque specimens based on fiber-optic white light interferometry. A new type of self-reference probe, which is composed of a fiber ferrule, an integrated beam splitter, and a gradient index lens, is presented. In our setup, two probes of this kind are fixed faci...
Article
Full-text available
We propose and demonstrate a hybrid fiber-based sensor combining a multimode interference (MMI) structure and a surface plasmon resonance (SPR) structure for simultaneous measurement of temperature and refractive index (RI) of a liquid sample. We configure the MMI structure by connecting a single-mode fiber, a no-core fiber, and a single-mode fiber...
Conference Paper
Based on 3D printing technology, multi-core doped silica optical fibre has been fabricated. The demonstration heralds a new fibre manufacturing milestone one that enables the design of fibres not previously feasible.
Article
We present a new scheme of large mode-field area fiber with chromatic dispersion management. The large core fiber is modified with two rod-arrays, which are able to manage chromatic dispersion. The rod-arrays are composed of high Ge-doped rods and located symmetrically on the both sides of the large core. Moreover the high-order modes can be remove...
Article
Full-text available
We propose and demonstrate a novel approach to transport a strongly absorbing particle in an X-typed trajectory reciprocally in pure liquid glycerol based on a dual-beam optical fiber trap. We perform the X-typed light field by integrating a glass microsphere on the tip of a two-core fiber. The motion of the absorbing particle in pure liquid glycer...
Article
In this Letter, we propose, to the best of our knowledge, the first in-fiber optofluidic Raman surface-enhanced Raman spectroscopy (SERS) sensor based on a microstructured hollow fiber (MHF) with a suspended core. Taking advantage of the unique internal structure, we immobilize silver nanoparticles with an SERS effect in the MHF by chemical bonding...
Article
Full-text available
We propose and demonstrate a simple approach for noncontact, three-dimensional, and stable trapping of a single nanoparticle with a super-low incident laser power (0.7 mW) via the single-fiber optical tweezers. We splice a section of single-mode fiber and a section of multimode fiber to construct a Bessel-like beam, which produces narrow output las...
Article
Full-text available
Silica optical fiber was drawn from a three-dimensional printed preform. Both single mode and multimode fibers are reported. The results demonstrate additive manufacturing of glass optical fibers and its potential to disrupt traditional optical fiber fabrication. It opens up fiber designs for novel applications hitherto not possible.
Article
We propose and demonstrate a novel all-fiber phase shifter by integrating a microstructured hollow fiber (MHF) and gold nanorods (GNRs) with photothermal effect. There are two cores and a central hole in the MHF. One core is suspended on the inner surface of the central hole, which serves as the sensing arm. The other one located in the cladding is...
Article
Based on the analysis and research of the existing intelligent bolt technology, this paper proposes a smart bolt based on fiber Bragg grating sensing technology. The bolt design process was systematically introduced, and the physical model of the three-point fixed anti-tail fiber sloshing was given, as well as the corresponding simulation and exper...
Article
Full-text available
The paper presents an innovative experimental setup that can show the wave–particle duality of light. A new experimental class for teaching light wave–particle duality concept based on the presented setup is also designed for undergraduates who major in Optics. Based on optical radiation pressure theory, the three-dimensional space trapping, locali...