Z
Zhi Tong
Researcher at University of California, San Diego
Publications - 91
Citations - 1672
Zhi Tong is an academic researcher from University of California, San Diego. The author has contributed to research in topics: Optical amplifier & Amplifier. The author has an hindex of 19, co-authored 91 publications receiving 1585 citations. Previous affiliations of Zhi Tong include Chalmers University of Technology & Beijing Jiaotong University.
Papers
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Journal ArticleDOI
Towards ultrasensitive optical links enabled by low-noise phase-sensitive amplifiers
Zhi Tong,Carl Lundstrom,Peter A. Andrekson,Colin J. McKinstrie,Magnus Karlsson,Daniel Blessing,Ekawit Tipsuwannakul,Benjamin J. Puttnam,Hiroyuki Toda,Lars Gruner-Nielsen +9 more
TL;DR: In this paper, an optical-fiber-based non-degenerate PSA link consisting of a phase-insensitive parametric copier followed by a PSA that provides broadband amplification, signal modulation format independence, and nearly 6dB link noise-figure (NF) improvement over conventional, erbium-doped fiber amplifier based links.
Journal ArticleDOI
Ultralow Noise, Broadband Phase-Sensitive Optical Amplifiers, and Their Applications
TL;DR: In this paper, a copier-PSA scheme is proposed, which consists of a parametric phase-insensitive copier followed by one or more PSAs, and a record-low 1.1 dB noise figure was measured at >;26 dB gain.
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Spectral linewidth preservation in parametric frequency combs seeded by dual pumps
TL;DR: A new technique for generation of programmable-pitch, wideband frequency combs with low phase noise using cavity-less, multistage mixer driven by two tunable continuous-wave pump seeds is demonstrated.
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Full characterization of the signal and idler noise figure spectra in single-pumped fiber optical parametric amplifiers
TL;DR: Four different noise sources, which are amplified quantum noise, Raman phonon seeded excess noise, pump transferred noise (PTN), and pump residual noise, are considered simultaneously to model the wavelength-dependent noise figure in a single-pumped fiber optical parametric amplifier.
Journal ArticleDOI
Detailed characterization of a fiber-optic parametric amplifier in phase-sensitive and phase-insensitive operation
Joseph Kakande,Carl Lundstrom,Peter A. Andrekson,Zhi Tong,Magnus Karlsson,Periklis Petropoulos,Francesca Parmigiani,David J. Richardson +7 more
TL;DR: A single-pumped, non-degenerate phase-sensitive parametric amplifier with a precise control of phase and amplitude of the in-going waves is experimentally demonstrated and a departure from the theoretical maximum attenuation as the gain increases is observed and explained.