This work reports on the design of a ring resonator with a high quality factor compatible with InP based generic foundry processes. The resonator consists of a spiral delay line, coupled to a waveguide via a Multimode Interference Coupler with unequal splitting ratio. The spiral loss is greatly reduced by using low-doped shallowly etched waveguides with millimeter bending radii. Based on a measured propagation loss of 0.3 dB/cm, a quality factor of 106 and an extinction ratio of about 10 dB are expected for a ring length of 80 mm. By folding the ring into a spiral the chip size is reduced significantly, resulting in a footprint of 2.5 mm × 3.6 mm.
Design of a compact high-performance InP ring resonator / D'Agostino, D.; Carnicella, G.; Ciminelli, Caterina; Ambrosius, H. P. M. M.; Smit, M. K.. - ELETTRONICO. - (2014). (Intervento presentato al convegno 3rd Mediterranean Photonics Conference, MePhoCo 2014 tenutosi a Trani, Italy nel May 7-9, 2014) [10.1109/MePhoCo.2014.6866452].
Design of a compact high-performance InP ring resonator
CIMINELLI, Caterina;
2014-01-01
Abstract
This work reports on the design of a ring resonator with a high quality factor compatible with InP based generic foundry processes. The resonator consists of a spiral delay line, coupled to a waveguide via a Multimode Interference Coupler with unequal splitting ratio. The spiral loss is greatly reduced by using low-doped shallowly etched waveguides with millimeter bending radii. Based on a measured propagation loss of 0.3 dB/cm, a quality factor of 106 and an extinction ratio of about 10 dB are expected for a ring length of 80 mm. By folding the ring into a spiral the chip size is reduced significantly, resulting in a footprint of 2.5 mm × 3.6 mm.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.