Open AccessInvestigation of the phase noise of a microresonator soliton comb
Author(s) -
Kenji Nishimoto,
Kaoru Minoshima,
Takeshi Yasui,
Naoya Kuse
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.395436
Subject(s) - phase noise , frequency comb , physics , optics , soliton , noise (video) , quantum noise , phase (matter) , laser , relative intensity noise , mode locking , optoelectronics , semiconductor laser theory , quantum mechanics , computer science , nonlinear system , artificial intelligence , image (mathematics) , quantum
Optical frequency combs generated from microresonators (especially microresonator soliton combs) have been attracting significant attentions because of the potential to be fully chip-scale. Among various promising applications of soliton combs, coherent optical communications and mm/THz wireless communications require low phase noise of the comb modes and low relative phase noise between the comb modes, respectively. Here, we measure the phase noise of a soliton comb, investigating how the thermorefractive noise of a microresonator influences on the phase noise. We observe the quadratic increase of the phase noise of the comb modes, as the comb mode number, counted from the wavelength of a pump cw laser, increases. In addition, we measure the relative phase noise between the comb modes, showing less influence of the phase noise of pump cw lasers by comparing soliton combs generated from pump cw lasers with low and large phase noise.