Open AccessFull‐range wavelength switching at tunable distributed amplification‐DFB laser with high‐accuracy feedforward control
Author(s) -
Niiya Yuri,
Kuboki Takeshi,
Kato Kazutoshi
Publication year - 2021
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12122
Subject(s) - distributed feedback laser , materials science , laser , tunable laser , packet switching , feed forward , optoelectronics , wavelength , switching time , range (aeronautics) , optics , network packet , computer science , physics , engineering , computer network , control engineering , composite material
Abstract To realise an optical packet switching system, a tunable laser that can achieve high‐speed and wide‐range tuning is required. One candidate, we have studied for this role, is the tunable distributed amplification (TDA)‐distributed feedback (DFB) laser. In this study, with an aim to realise high‐speed switching at the full C‐band tuning range of a TDA‐DFB laser array, we investigated 800‐GHz‐wide switching, which is the maximum tuning range of a single TDA‐DFB laser. By improving the accuracy of feedforward control, we achieved a high‐speed wavelength switching time of 30 ns.