Yunfei Fu, Tong Ye, Weijie Tang, and Tao Chu. Efficient adiabatic silicon-on-insulator waveguide taper[J]. Photonics Research, 2014, 2(3): A41
- Photonics Research
- Vol. 2, Issue 3, A41 (2014)
Fig. 1. Top view of the structure of a linear waveguide taper. W 0 W max L θ z θ m
Fig. 2. Transmission dependence on the constant α 2 ), at a wavelength of 1550 nm.
Fig. 3. Transmission of a taper designed according to Eq. (2 ) as a function of the length of the taper. For comparison, linear, parabolic, exponential, and Gaussian taper types are included.
Fig. 4. Simulated field intensity | E | 2 2 ), (b) 5-μm-long exponential taper, (c) 5-μm-long parabolic taper, (d) 5-μm-long Gaussian taper, (e) 5-μm-long linear taper, and (f) 15-μm-long linear taper.
Fig. 5. Transmission of the tapers as a function of taper length at a wavelength of 1550 nm. The widths of the input and output waveguides are 12 and 0.5 μm, respectively.
Fig. 6. Transmission of the designed taper for different taper thicknesses as a function of taper length, for the fundamental TE mode at a wavelength of 1550 nm.
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