Lasers, Fiber Optics, and Communications

Highly stable and tunable narrow-spacing dual-wavelength ytterbium-doped fiber using a microfiber Mach–Zehnder interferometer

[+] Author Affiliations
Harith Ahmad, Saaidal R. Azzuhri, Sulaiman W. Harun

Photonics Research Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia

Muhammad A. M. Salim

Photonics Research Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia

Laser Center, Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia

Opt. Eng. 55(2), 026114 (Feb 16, 2016). doi:10.1117/1.OE.55.2.026114
History: Received September 10, 2015; Accepted January 7, 2016
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Abstract.  We describe a successful demonstration of highly stable and narrowly spaced dual-wavelength output via an ytterbium-doped fiber laser. A microfiber-based Mach–Zehnder interferometer and a tunable bandpass filter were both placed into the laser ring cavity for the purpose of ensuring a stable and narrowly spaced dual-wavelength output. Experimental results comprised three sets of dual-wavelength lasing output with wavelength spacing of 0.06, 0.09, and 0.22 nm, respectively, and side-mode suppression ratio of 50  dBm. A subsequent stability test provided evidence that maximum power and wavelength fluctuation were less than 0.8 dB and 0.01 nm, respectively, and thus, the obtained output was considered to be highly stable in dual-wavelength operation. The proposed system offers advantages of flexibility in dual-wavelength laser generation in addition to excellent reliability.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Harith Ahmad ; Muhammad A. M. Salim ; Saaidal R. Azzuhri and Sulaiman W. Harun
"Highly stable and tunable narrow-spacing dual-wavelength ytterbium-doped fiber using a microfiber Mach–Zehnder interferometer", Opt. Eng. 55(2), 026114 (Feb 16, 2016). ; http://dx.doi.org/10.1117/1.OE.55.2.026114


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