skip to main content

Broadband Photonics with Quantum Dot Driven Thin-Film Lithium Niobate Integrated Circuits

Project

Project Details

Program
Electrical Engineering
Field of Study
Photonics, Physics, Semiconductors
Division
Computer, Electrical and Mathematical Sciences and Engineering

Project Description

Thin-film lithium niobate (TFLN), often termed the "silicon of photonics," is distinguished by its strong electro-optic response (r33 = 30 pm/V), wide transparency window (400 nm – 5 μm), and high refractive index (~2.2). TFLN wafers merge the benefits of traditional bulk LN devices with smaller footprints and lower power consumption, through scalable fabrication methods similar to those in silicon photonics. Available in diameters up to 6 inches—with 8 inches on the horizon—these wafers showcase propagation losses of < 0.03 dB/cm in waveguides and Q factors exceeding 108 in microresonators. In addition to exceptional modulator metrics (bandwidths >

About the Researcher

Yating Wan
Assistant Professor, Electrical and Computer Engineering
Computer, Electrical and Mathematical Science and Engineering Division

Affiliations

Education Profile

  • Postdoc fellow, University of California, Santa Barbara, 2017-2022
  • Ph.D. Hong Kong University of Science and Technology, 2017
  • B.S. Zhejiang University, 2012

Research Interests

Professor Yating Wana€˜s research interests are in Silicon Photonics with special emphasis on integration of on-chip light sources for short-reach communication links. She is also interested in other related applications including biosensors/bioimaging, energy harvesting, machine vision, and quantum information processing.

Selected Publications

  • Y. Wan, C. Xiang, J. Guo, R. Koscica, MJ Kennedy, J. Selvidge, Z. Zhang, L. Chang, W. Xie, D.Huang, A. C. Gossard, and J. E. Bowers*, a€œHigh speed evanescent quantum-dot lasers on Sia€, Laser & Photonics Reviews 2100057, 2021.
  • Y. Wan, J. Norman, Y. Tong, MJ Kennedy, W. He, J. Selvidge, C. Shang, M. Dumont, A. Malik, H. K. Tsang, A. C. Gossard, and J. E. Bowers*, a€œ1.3 Aµm quantum-dot distributed feedback lasers directly grown on (001) Sia€, Laser & Photonics Reviews. 14 (7), 2070042, 2020.
  • Y. Wan, C. Shang, J. Huang, Z. Xie, A. Jain, D. Inoue, B. Chen, J. Norman, A. C. Gossard, and J. E. Bowers*, a€œLow-dark current 1.55 I¼m InAs quantum dash waveguide photodiodesa€, ACS nano 14(3), 3519-3527, 2020.
  • Y. Wan, S. Zhang, J. Norman, MJ Kennedy, W. He, Y. Tong, C. Shang, J. He, H. K. Tsang, A. C. Gossard, and J. E. Bowers*, a€œDirectly modulated single-mode tunable quantum dot lasers at 1.3 Aµma€, Laser & Photonics Reviews. 14(3), 1900348, 2020
  • Y. Wan, S. Zhang, J. Norman, MJ Kennedy, W. He, S. Liu, C. Xiang, C. Shang, J. He, A. C. Gossard, and J. E. Bowers*, a€œTunable quantum dot lasers directly grown on Sia€, Optica, 6(11), 1394-1400 (2019).

Desired Project Deliverables

The students are expected to acquire the basic knowledge of the design of the integrated silicon photonics chips, proficient skills of device designs using simulation tools, hand-on experimental experiences of optoelectronic device characterizations, and conference/journal publications.

Recommended Student Background

Semiconductor physics
Integrated photonics
Semiconductor lasers

We are shaping the
World of Research

Be part of the journey with VSRP

Find a Project
3-6 months
Internship period
100+
Research Projects
3.5/4
Cumulative GPA
310
Interns a Year