Liquid refractive index sensor based on slow light in slotted photonic crystal waveguide |
| |
Authors: | Ya-nan Zhang Yong ZhaoQi Wang Kai Xue |
| |
Institution: | Northeastern University, College of Information Science and Engineering, Shenyang 110819, China |
| |
Abstract: | A high sensitive and compact refractive index sensor based on slotted photonic crystal waveguide (S-PhCW) is demonstrated. This design is worked on a Mach–Zehnder interferometer (MZI) configuration with S-PhCW as the measuring arm, which can be used to detect any changes in refractive index that correspond to different concentration of the measuring liquid. Combining the slow light enhancement in photonic crystal waveguide (PhCW) with the advantage of excellent optical confinement in slot waveguide, the sensitivity of this simple scheme can reach to 2.3 × 109 nm/RIU with the active region of only 1 mm long. |
| |
Keywords: | Liquid refractive index sensor Slotted photonic crystal waveguide Sensitivity Slow light |
本文献已被 ScienceDirect 等数据库收录! |