Electrically controllable long-period liquid crystal fiber gratings

被引：43
作者：
Jeong, Y [1 ]
Yang, BC
Lee, B
Seo, HS
Choi, S
Oh, K
机构：
[1] Seoul Natl Univ, Sch Elect Engn, Seoul 151742, South Korea
[2] Kwangju Inst Sci & Technol, Dept Informat & Commun, Kwangju, South Korea
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2000年 / 12卷 / 05期
关键词：
coupled-mode analysis; fiber gratings; liquid crystal; optical fiber communication; optical fiber devices; tunable filters;
D O I：
10.1109/68.841272
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An electrically controllable fiber-optic filter for broad-band rejection has been demonstrated by periodically poling a liquid-crystalline core in a hollow-core fiber by means of an external long-period-combed electrode. The periodically poled liquid-crystalline core in a period of 483 mu m couples the fundamental core mode to the leaky cladding modes. A maximum transmission loss dip of approximately 15-nm bandwidth and 6-dB band rejection has been obtained for a nonpolarized light with a combed 250-V external voltage modulation. The experimental result matches well with a numerical expectation, which has been analyzed by the discretized coupled-mode theory for an anisotropic perturbation.
引用
收藏
页码：519 / 521
页数：3
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