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Proceedings Paper

Towards high-power on-chip GHz frequency combs
Author(s): A. Choudhary; A. Lagatsky; P. Kannan; C. T. A. Brown; D. P. Shepherd
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Paper Abstract

In this paper we present on-chip mode-locked waveguide lasers fabricated in Yb-doped phosphate glass and Er, Ybdoped phosphate glass. At 1 micron wavelength, pulse repetition rates of up to 15 GHz with pulses ~800 fs were demonstrated and at 1.5 micron, picosecond pulses with a repetition rate up to 7 GHz were demonstrated. Dispersion was controlled in the cavity by varying the spacing between the waveguide and the SESAM, while the repetition rate could be controlled by varying the optical power. The average power can also be scaled using an integrated optical amplifier and on-chip gain of up to 10 dB was demonstrated. All these individual components can be integrated in a single platform to achieve a high-power on-chip multi-GHz optical frequency comb. Furthermore, we discuss an application of such laser sources in high-capacity telecommunications applications.

Paper Details

Date Published: 17 May 2018
PDF: 6 pages
Proc. SPIE 10683, Fiber Lasers and Glass Photonics: Materials through Applications, 106830W (17 May 2018); doi: 10.1117/12.2306711
Show Author Affiliations
A. Choudhary, The Univ. of Sydney (Australia)
A. Lagatsky, Fraunhofer Ctr. for Applied Photonics (United Kingdom)
P. Kannan, The Government Victoria College, Palakkad (India)
C. T. A. Brown, Univ. of St. Andrews (United Kingdom)
D. P. Shepherd, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 10683:
Fiber Lasers and Glass Photonics: Materials through Applications
Stefano Taccheo; Jacob I. Mackenzie; Maurizio Ferrari, Editor(s)

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