科研之友
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摘要
A liquid core waveguide as a refractometer is proposed. Micro-tunnels were created in standard optical fiber using tightly focused femtoscond laser inscription and chemical etching. A 1.2(h)x125(d)x500(1) mu m micro-slot engraved along a fiber Bragg grating (FBG) was used to construct liquid core waveguide by filling the slot with index matching oils. The device was used to measure refractive index and sensitivity up to 10(-6)/pm was obtained.
- 出版日期2007-11-26
