Abstract
We demonstrate a compact short-pass filter fabricated by integrating a microfiber ( in diameter) with a low-index substrate. By varying the interaction length (from ) between the microfiber and the substrate for wavelength-dependent evanescent leakage, the cutoff wavelength has been tuned over a wide range of . Typical rejection loss is higher than with insertion loss as low as . The fiber-diameter-dependent cutoff is also investigated, suggesting that the filter can be applied over a wide spectral range from . The microfiber-based short-pass filters demonstrated show advantages of compact size, wideband applicability, simple structure, high rejection loss, and compatibility with miniaturized fiber devices.
© 2008 Optical Society of America
Full Article | PDF ArticleMore Like This
Nan-Kuang Chen, Sien Chi, and Shiao-Min Tseng
Opt. Lett. 29(19) 2219-2221 (2004)
Ping Zhao, Lei Shi, Yang Liu, Zheqi Wang, and Xinliang Zhang
Appl. Opt. 52(36) 8834-8839 (2013)
Yuhang Li and Limin Tong
Opt. Lett. 33(4) 303-305 (2008)