Passively mode-locked laser using an entirely centred erbium-doped fiber

• Main Authors: Ahmad, H, Semangun, Julian M, Azzuhri, Saaidal R, Zulkifli, Mohd Zamani, Awang, N. A., Harun, S.W.
• Format: Article
• Language: English
• Published: IOP Publishing 2015
• Subjects: QC Physics
• Online Access: http://irep.iium.edu.my/84058/1/ahmad2015%20copy%202.pdf; http://irep.iium.edu.my/84058/; https://iopscience.iop.org/article/10.1088/1054-660X/25/4/045105
• Institution: Universiti Islam Antarabangsa Malaysia

This paper describes the setup and experimental results for an entirely centred erbium-doped fiber laser with passively mode-locked output. The gain medium of the ring laser cavity configuration comprises a 3m length of two-core optical fiber, wherein an undoped outer core region of 9.38 μm diameter surrounds a 4.00 μm diameter central core region doped with erbium ions at 400 ppm concentration. The generated stable soliton mode-locking output has a central wavelength of 1533 nm and pulses that yield an average output power of 0.33mW with a pulse energy of 31.8 pJ. The pulse duration is 0.7 ps and the measured output repetition rate of 10.37MHz corresponds to a 96.4 ns pulse spacing in the pulse train.