130 citations · 640 across the 40 of their papers we have counts for
40 papers
An electro-optically tunable arrayed waveguide grating fabricated on thin film lithium niobate
Zhe Wang, 1 Zhiwei Fang, Yiran Zhu +6
We design and fabricate an 8-channel thin film lithium niobate (TFLN) arrayed-waveguide grating (AWG) and demonstrate the electro-optical tunability of the device. The monolithical…
An erbium-doped waveguide amplifier on thin film lithium niobate with an output power exceeding 100 mW
Rui Bao, Zhiwei Fang, Jian Liu +6
We demonstrate high-power thin film lithium niobate (TFLN) erbium-doped waveguide amplifier (EDWA) with a maximum on-chip output power of 113 mW and a gain of 16 dB. The on-chip in…
On-chip wavelength division multiplexing by angled multimode interferometer fabricated on erbium-doped thin film lithium niobate on insulator
Jinli Han, Rui Bao, Rongbo Wu +9
Photonic integrated circuits based on erbium doped thin film lithium niobate on insulator has attracted broad interests with insofar various waveguide amplifiers and microlasers de…
Integrated electro-optically tunable narrow-linewidth III-V laser
Yiran Zhu, Shupeng Yu, Zhiwei Fang +8
We demonstrate an integrated electro-optically tunable narrow-linewidth III-V laser with an output power of 738.8 μW and an intrinsic linewidth of 45.55 kHz at the C band. The lase…
Thin Film Lithium Niobate Electro-optic Isolator Fabricated by photolithography assisted chemo-mechanical etching (PLACE)
Lang Gao, Youting Liang, Lvbin Song +10
We report a thin-film lithium niobate electro-optic isolator fabricated by photolithography-assisted chemo-mechanical etching in this work. The device demonstrates 39.50 dB isolati…
On-chip coherent beam combination of waveguide amplifiers on Er-doped thin film lithium niobate
Rui Bao, Lvbin Song, Zhiwei Fang +9
We demonstrate on-chip coherent beam combination of two waveguide amplifiers on Er-doped thin film lithium niobate (Er: TFLN) platform. Our device is built based on an elect…
On-chip arrayed waveguide grating fabricated on thin film lithium niobate
Zhe Wang, Zhiwei Fang, Zhaoxiang Liu +8
We design an on-chip 8-channel TFLN AWG and fabricate the device using photolithography assisted chemo-mechanical etching (PLACE) technique. We experimentally measure the transmiss…
Multi-mode Perturbation Modelling for Cavity Polygon and Star Modes
Saeed Farajollahi, Zhiwei Fang, Jintian Lin +3
Polygon and star modes enable unidirectional emission and single-frequency lasing in whispering gallery microcavities. To understand their properties and facilitate design, we have…
Electro-optically programmable photonic circuits enabled by wafer-scale integration on thin-film lithium niobate
Yong Zheng, Haozong Zhong, Haisu Zhang +10
Programmable photonic circuits performing universal linear-optical transformations underpin vital functions in photonic quantum information processing, quantum-enhanced sensor netw…
On-chip single-mode thin film lithium niobate laser based on Sagnac loop reflectors
Shupeng Yu, Zhiwei Fang, Zhe Wang +7
We demonstrate an on-chip single-mode Er3+-doped thin film lithium niobate (Er: TFLN) laser which consists of a Fabry-Pérot (FP) resonator based on Sagnac loop reflectors (SLRs). T…
Monolithically integrated active passive waveguide array fabricated on thin film lithium niobate using a single continuous photolithography process
Yuan Zhou, Yiran Zhu, Zhiwei Fang +13
We demonstrate a robust low-loss optical interface by tiling passive (i.e., without doping of active ions) thin film lithium niobate (TFLN) and active (i.e., doped with rare earth…
Electrically driven compact hybrid lithium niobate microring laser
Junxia Zhou, Ting Huang, Zhiwei Fang +7
We demonstrate an electrically driven compact hybrid lithium niobate microring laser by butt coupling a commercial 980-nm pump laser diode chip with a high quality Er3+-doped lithi…
On-chip integrated Yb3+-doped waveguide amplifiers on thin film lithium niobate
Zhihao Zhang, Zhiwei Fang, Junxia Zhou +10
We report the fabrication and optical characterization of Yb3+-doped waveguide amplifiers (YDWA) on the thin film lithium niobate fabricated by photolithography assisted chemo-mech…
Monolithically integrated waveguide-coupled single-frequency microlaser on erbium-doped thin film lithium niobate
Youting Liang, Junxia Zhou, Rongbo Wu +10
We overcome the difficulty in realizing a monolithic waveguide-coupled microring laser integrated on erbium-doped thin film lithium niobate (Er: TFLN) using photolithography assist…
High-production-rate fabrication of low-loss lithium niobate electro-optic modulators using photolithography assisted chemo-mechanical etching (PLACE)
Rongbo Wu, Lang Gao, Youting Liang +7
Integrated thin-film lithium niobate (LN) electro-optic (EO) modulators of broad bandwidth, low insertion loss, low cost and high production rate are essential elements in contempo…
A high-gain cladded waveguide amplifier on erbium doped thin-film lithium niobate fabricated using photolithography assisted chemo-mechanical etching
Youting Liang, Junxia Zhou, Zhaoxiang Liu +9
Erbium doped integrated waveguide amplifier and laser prevail in power consumption, footprint, stability and scalability over the counterparts in bulk materials, underpinning the l…
On-chip multi-color microdisk laser on Yb3+-doped thin-film lithium niobate
Yuan Zhou, Zhe Wang, Zhiwei Fang +12
We demonstrate an on-chip Yb3+-doped lithium niobate (LN) microdisk laser. The intrinsic quality factors of the fabricated Yb3+-doped LN microdisk resonator are measured up to 3.79…
Coherent mode-combined ultra-narrow-linewidth single-mode micro-disk laser
Jintian Lin, Saeed Farajollahi, Zhiwei Fang +10
Integrated single-mode microlasers with ultra-narrow linewidths play a game-changing role in a broad spectrum of applications ranging from coherent communication and LIDAR to metro…
An Ultrahigh-Q Microresonator on 4H-silicon-carbide-on-insulator Platform for Multiple Harmonics, Cascaded Raman Lasing and Kerr Comb Generations
Chengli Wang, Zhiwei Fang, Ailun Yi +13
The realization of ultrahigh quality (Q) resonators regardless of the underpinning material platforms has been a ceaseless pursuit, because the high Q resonators provide an extreme…
An electro-optically tunable microring laser monolithically integrated on lithium niobate on insulator
Difeng Yin, Yuan Zhou, Zhaoxiang Liu +9
We demonstrate monolithic integration of an electro-optically (EO) tunable microring laser on lithium niobate on insulator (LNOI) platform. The device is fabricated by photolithogr…
An on-chip tunable micro-disk laser fabricated on Er3+ doped lithium niobate on insulator (LNOI)
Zhe Wang, Zhiwei Fang, Zhaoxiang Liu +7
We demonstrate a C-band wavelength-tunable microlaser with an Er3+ doped high quality (~1.02x10^6) lithium niobate microdisk resonator. With a 976 nm continuous-wave pump laser, la…
Polygon Coherent Modes in aWeakly Perturbed Whispering Gallery Microresonator for Efficient Second Harmonic, Optomechanic and Frequency Comb Generations
Zhiwei Fang, Sanaul Haque, Farajollahi Saeed +8
We observe high optical quality factor (Q) polygonal and star coherent optical modes in a lithium niobate microdisk. In contrast to the previous polygon modes achieved by deformed…
High-index-contrast single-mode optical waveguides fabricated on lithium niobate by photolithography assisted chemo-mechanical etching (PLACE)
Jianhao Zhang, Rongbo Wu, Min Wang +7
We report fabrication of low loss single mode waveguides on lithium niobate on insulator (LNOI) cladded by a layer of SiO2. Our technique, termed photolithography assisted chemo-me…
Efficient Electro-optical Tuning of Optical Frequency Microcomb on a Monolithically Integrated High-Q Lithium Niobate Microdisk
Zhiwei Fang, Haipeng Luo, Jintian Lin +7
We demonstrate efficient tuning of a monolithically integrated lithium niobate microdisk (LN) optical frequency microcomb. Utilizing the high optical quality (Q) factor (i.e., Q~7.…