supported by the National Natural Science Foundation of China (Nos.12074283,91836302,11874279,and 62305240)
We report the generation of polarization-entangled photon pairs in the 1550 nm band by pumping an uneven nonlinear interferometer loop with two orthogonally polarized counterpropagating pump pulses.The uneven nonlinea...
supported by the National Key Research and Development Program of China (No. 2018YFC1503703);the Shanghai Academy of Spaceflight Technology(No. SAST2019-127)。
Fast and stable phase control is essential for many applications in optics. Here, we propose an all-fiber all-optical phase modulation scheme based on a Fabry–Perot interferometer(FPI) and an Er/Yb co-doped fiber(EYD...
supported by the National Key Research and Development Program of China(No.2017YFE0104200);the Beijing Natural Science Foundation(No.JQ18023);the National Natural Science Foundation of China(Nos.81421004 and 61971447);the National Key Instrumentation Development Project of China(No.2013YQ030651)。
We present a novel noncontact ultrasound(US)and photoacoustic imaging(PAI)system,overcoming the limitations of traditional coupling media.Using a long coherent length laser,we employ a homodyne free-space Mach-Zehnder...
supported in part by the National Natural Science Foundation of China(Nos.12004279 and 12074283)。
We demonstrate a high-performance acousto-optic modulator-based bi-frequency interferometer,which can realize either beating or beating free interference for a single-photon level quantum state.Visibility and optical ...
supported by the National Natural Science Foundation of China(No.52175500);the National Key Research and Development Program of China(No.2022YFF0605102);the Natural Science Foundation of Heilongjiang Province(No.LH2019E048)。
We propose an absolute distance measurement method that employs heterodyne and superheterodyne combined interferometers to achieve synchronous detection and demodulation of multiwavelengths.Coarse and fine synthetic w...
partially supported by the National Key Research and Development Program of China(No.2021YFB3602600);the Research and Development Program in Key Areas of Guangdong Province,China(No.2020B090922004)。
High-order dispersion introduced by Gires–Tournois interferometer mirrors usually causes spectral sidebands in the nearzero dispersion region of mode-locked fiber lasers.Here,we demonstrate a sideband-free Yb-doped m...
supported in part by the Joint Research Fund in Astronomy under Cooperative Agreement between the National Natural Science Foundation of China(NSFC) and the Chinese Academy of Sciences(CAS)(Nos.U2031132 and U2031130);the National Natural Science Foundation of China(No.12103015);the Fundamental Research Funds for the Central Universities to the Harbin Engineering University。
We propose a high-sensitivity bidirectional torsion sensor using a helical seven-core fiber taper embedded in multimode fiber(MHSTM).Sensors with different taper waists and helical pitches are fabricated,and their tra...
supported in part by the National Natural Science Foundation of China(No.61875247);the Natural Science Foundation of Shandong Province(Nos.ZR2020QF086 and ZR2022MF253);Liaocheng University(Nos.318052199,318012023,318051412,31805180101,319190301,and 318051411)。
Wavelength-tunable dissipative solitons and amplifier similaritons have been obtained by inserting all-fiber Mach-Zehnder interferometer(MZI) filters with different free spectral ranges(FSRs) in a Yb-doped mode-locked...
supported by the National Natural Science Foundation of China(Nos.12074252,62022058,62005159,and 11734011);National Key Research and Development Program of China(Nos.2017YFA0303701 and 2018YFA0306301);Shanghai Municipal Science and Technology Major Project(No.2019SHZDZX01-ZX06);Shanghai Rising-Star Program(No.20QA1405400);Shanghai Jiao Tong University(No.21X010200828)。
We design and fabricate an unbalanced Mach–Zehnder interferometer(MZI)via electron beam lithography and inductively coupled plasma etching on lithium niobate thin film.The single unbalanced MZI exhibits a maximum ext...
supported by the Northeast Petroleum University Youth Science Foundation(No.2020QNL-13)。
An improved self-mixing grating interferometer based on the Littrow structure has been proposed in this Letter to measure displacement.The grating is integrated inside the interferometer to reduce the impact on the vi...