Nickel oxide-embedded tapered fibre as a saturable absorber for ultrafast photonics

Mahdi, Mohd Adzir and Che Aziz, Siti Asma and Mohd Yusoff, Norita and Zainol Abidin, Nadiah Husseini and Che Abdullah, Che Azurahanim and Idris, Muhammad Idzdihar and Alresheedi, Mohammed Thamer and Ng, Eng Khoon (2023) Nickel oxide-embedded tapered fibre as a saturable absorber for ultrafast photonics. Optik, 295. pp. 1-12. ISSN 0030-4026

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Abstract

This work demonstrates a femtosecond pulse generation of erbium-doped fibre laser utilising nickel oxide (NiO) as saturable absorbing material. The prepared composite of NiO/polydimethylsiloxane (PDMS) was successfully transferred onto a plane of tapered fibre through spin- coating technique. Based on the evanescent field interaction of NiO at tapered fiber region, the fabricated NiO/PDMS-saturable absorber exhibited 4.0% modulation depth and 135.5 MW/cm 2 saturation intensity. The integration of this saturable absorber device established a mode-locked operation at 50.0 mW pump power, with ultrafast pulse width of 793 fs operating at the centre wavelength of 1561.27 nm. The pulse repetition rate of 8.0 MHz, with 0.89 nJ energy was attained at 250.0 mW pump power. These research findings open an avenue for further advancement of transition metal oxides in the future of ultrafast photonics.

Item Type:	Article
Uncontrolled Keywords:	Fibre laser, Mode-locked, Nickel oxide, Saturable absorber
Divisions:	Faculty of Electrical and Electronic Engineering Technology
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	06 Jan 2025 09:59
Last Modified:	06 Jan 2025 09:59
URI:	http://eprints.utem.edu.my/id/eprint/28119
Statistic Details:	View Download Statistic

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