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Small-Pitch Kagome Hollow-Core Photonic Crystal Fibre |
| MENG Jia, HOU Lan-Tian, ZHOU Gui-Yao, WANG Kang, CHEN Chao |
| 1College of Information Science and Engineering, Yanshan University, Qinhuangdao 0660042Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinghuangdao 066004 |
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| Cite this article: |
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MENG Jia, HOU Lan-Tian, ZHOU Gui-Yao et al 2008 Chin. Phys. Lett. 25 2860-2862 |
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Abstract A hollow-core photonic crystal fibre (HC-PCF) based on small-pitch kagome lattice cladding is designed and fabricated. The pitch of the fibre is only 2.45μm and it corresponds to a region of low normalized frequency which has never been investigated before. Both experiments and calculations show that this kagome HC-PCF has a broad optical transmission band from 400nm to 900nm, covering the whole visible and near infrared region of the spectrum. Additionally, the loss curve of the fibre is flat in the visible region and the minimum of the loss achieves 0.16dB/m, which is lower than the loss of the kagome HC-PCFs reported before. Furthermore, this fibre can well confine the modes in the air core. No surface modes can be detected in the surrounding silica of the hollow core.
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| Keywords:
42.25.Dd
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Received: 20 November 2007
Published: 25 July 2008
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| PACS: |
42.25.Dd
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(Wave propagation in random media)
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