Narrow bandwidth optimization using a polymer microring resonator in a thulium–holmium fiber laser cavity

Abdul Kadir@Jaafar, Muhammad Zamzuri and Ariannejad, Mohammad Mahdi and Samion, Muhamad Zharif and Tan, Chee Long and Ismail, Mohammad Faizal and Bayang, Leonard and Ahmad, Harith (2020) Narrow bandwidth optimization using a polymer microring resonator in a thulium–holmium fiber laser cavity. Optics Communications, 466. pp. 1-4. ISSN 0030-4018 E-ISSN 1873-0310

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Abstract

A thulium–holmium fiber (THDF) laser cavity has been demonstrated with a SU-8 polymer microring resonator (PMRR) in the cavity. The PMRR has a 500 μm radius and fabricated using the lithography method, with the SU-8 polymer acting as a host material. The butt coupling method was used for the horizontal coupling of light from a ultra-high numerical aperture (UHNA) fiber to the polymer waveguide. Lasing in the cavity without the PMRR is obtained at a center wavelength of 1.910 μm, 1.869 μm when the PMMR is inserted into the cavity. A maximum power of -5 dBm was extracted from the laser oscillator, and the laser linewidth was measured to be ∼26.6 kHz by radio-frequency spectrum analyzer analysis. The PMRR was able to generate an output with a free spectral range of 0.79 μm at a frequency of 59.25 GHz.

Item Type:	Article (Journal)
Additional Information:	7753/82014
Uncontrolled Keywords:	Thulium–holmium fiber lasers, Polymer microring resonator, Narrow bandwidth
Subjects:	Q Science > QC Physics T Technology > TP Chemical technology T Technology > TP Chemical technology > TP1080 Polymers, plastics and their manufacture
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Physics Kulliyyah of Science
Depositing User:	MUHAMMAD ZAMZURI ABDUL KADIR
Date Deposited:	07 Aug 2020 11:21
Last Modified:	07 Aug 2020 11:21
URI:	http://irep.iium.edu.my/id/eprint/82014

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