Volume 64, Issue 5 pp. 972-977
RESEARCH ARTICLE

Noise-like pulse generation with tungsten trioxide/polydimethylsiloxane-clad microfiber saturable absorber

Muhamad Amir Waliuddin Abdul Hadi

Muhamad Amir Waliuddin Abdul Hadi

Wireless and Photonics Networks Research Centre, Faculty of Engineering, Universiti Putra Malaysia, UPM Serdang, Malaysia

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Farah Diana Muhammad

Corresponding Author

Farah Diana Muhammad

Department of Physics, Faculty of Science, Universiti Putra Malaysia, UPM Serdang, Malaysia

Correspondence

Farah Diana Muhammad, Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.

Email: [email protected]

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Norita Mohd Yusoff

Norita Mohd Yusoff

Wireless and Photonics Networks Research Centre, Faculty of Engineering, Universiti Putra Malaysia, UPM Serdang, Malaysia

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Mohammed Thamer Alresheedi

Mohammed Thamer Alresheedi

Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh, Kingdom of Saudi Arabia

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Chee Seong Goh

Chee Seong Goh

Alnair Labs Corporation, Tokyo, Japan

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Mohd Adzir Mahdi

Mohd Adzir Mahdi

Wireless and Photonics Networks Research Centre, Faculty of Engineering, Universiti Putra Malaysia, UPM Serdang, Malaysia

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First published: 13 February 2022

Abstract

We report the formation of noise-like pulse (NLP) with tungsten trioxide/polydimethylsiloxane-clad microfiber saturable absorber integrated in a ring-cavity erbium-doped fiber laser. The NLP operation was confirmed by the presence of a coherence spike on top of a broad pedestal in the autocorrelation trace, with the measured pulse width value of 410 fs and 3.56 ps respectively. By increasing the pump power from the mode-locking threshold of 280–3300 mW, the spectral bandwidth was stretched from 22.3 to 22.8 nm, while the output power increased from to 1.9 to 24.3 mW. The maximum pulse energy of 3.5 nJ was generated at a repetition rate of 7 MHz. The signal-to-noise ratio was measured to be 53.8 dB, which indicated a good stability of pulse laser.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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