Bing Wei, Changyun Zhao, Gencheng Wang, Tingge Dai, Jianyi Yang, Kejiang Zhou, Yubo Li. Silicon photonic current sensor based on multimode interference[J]. Chinese Optics Letters, 2016, 14(3): 031301
- Chinese Optics Letters
- Vol. 14, Issue 3, 031301 (2016)
Fig. 1. Schematic of experiment setup for the proposed current sensor. PC: polarization controller.
Fig. 2. (a) Schematic diagram of the butt-coupling and the designed SMSW for mode motivation using the on-chip offset launch technique. (b) The SEM photograph of the fabricated silicon-based SMSW. (c) Simulated images of the two eigenmodes.
Fig. 3. Effective refractive index change of the two modes with the change of temperature, Δ n eff 0 TE 0 Δ n eff 1 TE 1
Fig. 4. Measured output spectrum versus current of the proposed sensor.
Fig. 5. Variations in the wavelength shift with current.
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