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Simple dual-loop optoelectronic oscillator with a low spurious level

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Abstract

We successfully demonstrated a simple dual-loop optoelectronic oscillator (OEO) with reduced spurious tones by using dual-direct modulation of a multi-electrode distributed-feedback semiconductor laser. By simply modulating the two electrodes of the laser simultaneously through a short and a long fiber loop, we realized a dual-loop OEO with highly suppressed spurious tones without any additional sophisticated optical devices or loop configuration. Compared with a single-loop approach, the X-band OEO signal generated by using the proposed device and loop configuration exhibits highly-suppressed spurious tones (>50 dB) without sacrificing the OEO signal and gain performance.

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Authors and Affiliations

  1. School of Electronic and Electrical Engineering, Hongik University, Seoul, 121-791, Korea

    Jun-Hyung Cho, Hyungtak Kim & Hyuk-Kee Sung

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  1. Jun-Hyung Cho
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  2. Hyungtak Kim
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  3. Hyuk-Kee Sung
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Correspondence to Hyuk-Kee Sung.

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Cho, JH., Kim, H. & Sung, HK. Simple dual-loop optoelectronic oscillator with a low spurious level. Journal of the Korean Physical Society 63, 1736–1739 (2013). https://doi.org/10.3938/jkps.63.1736

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  • DOI: https://doi.org/10.3938/jkps.63.1736

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