Small-footprint, high-efficiency, integrated transmitters for high-speed optical interconnect applications

Abstract

Short-cavity InGaAsP/InP DBR lasers with integrated SOA and EAM were fabricated using a quantum well intermixing processing platform. >10mW output power and 17.5% wall-plug efficiency was achieved at 30mA. EAM extinction was >15dB at-4V.

High contrast InP/InGaAsP grating MOCVD regrowth using TBA and TBP

“…A large value of k is also beneficial in the design of short-cavity DBR laser structures, where the effective penetration depth of the DBR should be minimized to reduce loss in the mirror and maximize the cavity mode spacing [3]. The formation of strong k gratings can be accomplished in several ways.…”

980 nm DBR Lasers Monolithically Integrated with EA Modulators for Optical Interconnect Applications

“…Highly efficient short cavity integrated DBR (distributed Bragg reflector) laser/EAM (electro-absorption modulator) transmitters for C2OI applications have previously been demonstrated at 1550 nm using quantum well intermixing (QWI) [2]. Quantum well intermixing has been demonstrated as an elegant technique for integration of photonic ICs at both 1550 [3] and 980 nm [4].…”