[Zurück]

D. Seyringer, M. Sagmeister, A. Maese-Novo, M. Eggeling, E. Rank, P. Muellner, R. Hainberger, W. Drexler, M. Vlaskovic, H. Zimmermann, G. Meinhardt, J. Kraft:
"Technological verification of size‑optimized 160‑channel silicon nitride‑based AWG‑spectrometer for medical applications";
Applied Physics B Lasers and Optics, -- (2019), Published 04 May 2019; 10 S.

We present the technological verification of a size-optimized 160-channel, 50-GHz silicon nitride-based AWG-spectrometer. The spectrometer was designed for TM-polarized light with a central wavelength of 850 nm applying our proprietary "AWG-Parameters" tool. For the simulations of AWG layout, the WDM PHASAR photonics tool from Optiwave was used. The simulated results show satisfying optical properties of the designed AWG-spectrometer. However, the high-channel count causes a large AWG size with standard design approaches. To solve this problem we designed a special taper enabling the reduction of AWG structure by about 15% while keeping the same optical properties. The AWG design was fabricated and the measured spectra not only confirm the proposed size-reduction but also the improvement of optical properties of the size-optimized AWG.

http://dx.doi.org/10.1007/s00340-019-7192-1