科研之友
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摘要
Strong antiresonant reflecting optical waveguiding is demonstrated in a novel poly (methylmethacrylate) (PMMA) hollow-core fiber. The transmission spectrum of the fiber was characterized using a supercontinuum source and it revealed distinct resonances with resonant dips as strong as similar to 20 dB in the wavelength range 480-900 nm, where PMMA has low absorption. The total propagation loss of the fiber was measured to have a minimum of similar to 45 dB m(-1) at around 500 nm. The thermal sensitivity of the fiber is 256 +/- 16 pm degrees C-1, defined as the red-shift of the resonances per degrees C, which is three times higher than the sensitivity of polymer fiber Bragg gratings.
- 出版日期2015-10
