TUTCRIS - Tampereen teknillinen yliopisto


GaAs-based gain waveguides with U-bend architecture enabling low loss and high yield hybrid integration on silicon photonic circuits

Tutkimustuotos: Konferenssiesitys, posteri tai abstrakti


TilaJulkaistu - 2019
OKM-julkaisutyyppiEi OKM-tyyppiä
TapahtumaEuropean conference on integrated optics 2019 - Ghent University, Ghent, Belgia
Kesto: 24 huhtikuuta 201926 huhtikuuta 2019
Konferenssinumero: 21


ConferenceEuropean conference on integrated optics 2019
LyhennettäECIO 2019


We present a U-bend design for traveling wave III-V gain devices, such as semiconductor optical amplifiers and laser diodes. The design greatly simplifies the butt-coupling between the III-V chip and silicon-on-insulator photonic circuit by bringing the I/O ports on one facet. This removes the need for precise dimension control otherwise required for 2-side coupling, therefore increasing the yield of mounted devices towards 100%. The design, fabrication and characterization of the U-bend device based on Euler bend geometry is presented. The losses for a bend with a minimum bending radius of 83 μm are 1.1 dB. In addition, we present an analysis comparing the yield and coupling losses of the traditionally cleaved devices with the results that the Euler bend approach enable, with the final conclusion that the yield is improved by several times while the losses are decreased by several dB.