High-speed and long-term wavelength stabilization of tunable distributed amplification distributed feedback laser after laser activation with feedforward and feedback control

Hiroki Fukuda, Kenta Yamaguchi, Takeshi Kuboki, Kazutoshi Kato

Research output: Contribution to journalArticle

Abstract

To manage recent exponentially increasing data traffic, optical-to-optical burst switching and packet switching systems have been attracting much attention because they do not require an optical-to-electrical and an electrical-to-optical conversions. These systems require high-speed optical switches with a large number of input/output ports. As a candidate for the optical switch, we have focused on the combination of wavelength tunable lasers and an arrayed waveguide grating router, and studied the tunable distributed amplification distributed feedback (TDA-DFB) lasers for the optical switch. Previously, our derived feedforward current control achieved high-speed wavelength switching at a single laser in six-arrayed TDA-DFB lasers. For larger-scale optical switching, wavelength switching from a laser to another in an array is required to cover a wide tunable range. In this study, we develop a novel current control model and successfully stabilize the wavelength immediately after laser activation, which would enable high-speed switching between different lasers. Furthermore, we demonstrate the combination of feedforward and feedback controls for high-speed switching with long-term stability.

Original languageEnglish
Article number08PD04
JournalJapanese Journal of Applied Physics
Volume57
Issue number8
DOIs
Publication statusPublished - Aug 1 2018

Fingerprint

feedforward control
Feedforward control
Distributed feedback lasers
distributed feedback lasers
feedback control
Feedback control
Amplification
Stabilization
stabilization
Chemical activation
high speed
activation
Optical switches
Wavelength
Lasers
wavelengths
lasers
Electric current control
switches
Optical burst switching

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

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abstract = "To manage recent exponentially increasing data traffic, optical-to-optical burst switching and packet switching systems have been attracting much attention because they do not require an optical-to-electrical and an electrical-to-optical conversions. These systems require high-speed optical switches with a large number of input/output ports. As a candidate for the optical switch, we have focused on the combination of wavelength tunable lasers and an arrayed waveguide grating router, and studied the tunable distributed amplification distributed feedback (TDA-DFB) lasers for the optical switch. Previously, our derived feedforward current control achieved high-speed wavelength switching at a single laser in six-arrayed TDA-DFB lasers. For larger-scale optical switching, wavelength switching from a laser to another in an array is required to cover a wide tunable range. In this study, we develop a novel current control model and successfully stabilize the wavelength immediately after laser activation, which would enable high-speed switching between different lasers. Furthermore, we demonstrate the combination of feedforward and feedback controls for high-speed switching with long-term stability.",
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