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Article Abstract
A tunable dual-frequency fiber laser is a crucial in a precision measurement system, significantly influencing measurement accuracy and cost. Consequently, a low beating frequency is preferred in many applications, such as coherence measurement. This paper demonstrates a novel, to our knowledge, dual-frequency, erbium-doped fiber laser, utilizing the Vernier effect and dual phase-shifted fiber Bragg gratings (PS-FBGs), with a beating frequency of 300 MHz. By adjusting the axial strain applied to the PS-FBG, the beating frequency can be tuned up to 1200 MHz. Additionally, altering the cavity length can reduce the beating frequency to 144 MHz.
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| http://dx.doi.org/10.1364/OE.562114 | DOI Listing |
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