科研之友
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摘要
A novel bandwidth-tunable fiber Bragg grating (FBG) filter with fixed center wavelength is demonstrated. A linear tuning range of 7.8 nm (0.26-8.06 nm) for the 3-dB bandwidth is realized in a 10-cm-long uniform FBG with (in original 3-dB bandwidth of 0.26 nm. Reflectivity is maintained at higher than 0.7, even as the FBG filter is tuned to the maximum bandwidth of the range. Variation of the center wavelength is less than 0.2 nm.
- 出版日期2004-4-5
- 单位南阳理工学院
