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Optimization of Waveguide Photodetector with Thin Absorbing Layer and Large Responsivity
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- Authors
- J. S. Choe, D. J. Kim, W. S. Han, J. H. Kim
- Issue Date
- 2020-02
- Citation
- SPIE OPTO 2020(SPIE 11309), pp.1-6
- Publisher
- SPIE
- Language
- English
- Type
- Conference Paper
- Abstract
- We present optimized structure of waveguide photodetector (WGPD) having large responsivity in spite that its absorption layer is thin. Through beam-propagation method simulations, spot-size converter integrated WGPD is found to be able to have larger responsivity with thinner absorbing layer. Calculated responsivity and polarization dependent loss of the optimized design are 0.83 A/W and 0.13 dB with 150-nm-thick and 25-μm-long absorber.
- KSP Keywords
- Absorbing layer, Absorption layer, Optimized structure, Polarization dependent loss, Spot size converter(SSC), Waveguide photodetector, beam propagation method, optimized design