Fano resonance and spectral compression in a ring resonator drop filter with feedback |
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Authors: | Ying Lu Xiangyong Fu Danpng Chu Wuqi Wen Jianquan Yao |
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Institution: | College of Precision Instrument and Opto-Electronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China |
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Abstract: | We propose a ring resonator drop filter with feedback loop which can form the other ring cavity to produce an asymmetric Fano-resonance line shape and mode compression. By properly adjusting the feedback loop, the asymmetric line shapes of the transmission spectra can be controlled and selectively mode compression of the circuiting intensity in the feedback loop is achieved. Such characteristics are useful for applications in ring resonator-based photonic devices such as all-optical switches, sensors and intracavity frequency selection single-mode laser. |
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Keywords: | Ring resonator Fano resonance Spectral compression |
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