Deep notch filter based on liquid-filled photonic crystal fiber |
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| Authors: | Bing ZOU Yange LIU Zhi WANG Bo LIU |
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| Affiliation: | Key Laboratory of Opto-Electronic Information and Technology, Ministry of Education, Institute of Modern Optics, Nankai University,Tianjin 300071, China |
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| Abstract: | A deep notch filter in a liquid-filled photonic bandgap fiber (PBGF) realized via filling an erbium-doped solid core photonic crystal fiber with high-index liquid is proposed and demonstrated. The numerical investigation indicates that the notch is formed due to avoid-crossing effect between the fundamental mode and LP02 supermodes. The resonance wavelength of the filter can be tuned by adjusting the temperature of the liquid-filled PBGF and shifts toward short wavelength. The blue-shift speed average is 1.3nm/℃. |
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| Keywords: | photonic crystal fiber liquid-filled photonic bandgap fiber filter |
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