Avner Badihi

Hybrid silicon photonics flip-chip laser integration with vertical self-alignment

We present a flip-chip integration process in which the vertical alignment is guaranteed by a mechanical contact between pedestals defined in a recess etched into a silicon photonics chip and a laser or semiconductor optical amplifier. By selectively etching up to the active region of the III-V materials, we can make the accuracy of vertical alignment independent on the process control applied to layer thicknesses during silicon photonics or III-V chip fabrication, enabling alignment tolerances below ±10 nm in the vertical (Z-)direction.

Co-integration of a temperature tolerant low impedance resonantly enhanced silicon photonics modulator

We report on an optically wideband, resonantly enhanced Mach-Zehnder modulator co-integrated with a 4Ω output impedance, 28Gbd driver from Mellanox Technologies. Error free transmission is demonstrated, at 14Gbps (25Gbps), in 4nm (3nm) wide optical wavelength range at a 10mW (20mW) laser output power level.

Silicon Photonics Transmitter with SOA and Semiconductor Mode-Locked Laser

We experimentally investigate an optical link relying on silicon photonics transmitter and receiver components as well as a single section semiconductor mode-locked laser as a light source and a semiconductor optical amplifier for signal amplification. A transmitter based on a silicon photonics resonant ring modulator, an external single section mode-locked laser and an external semiconductor optical amplifier operated together with a standard receiver reliably supports 14 Gbps on-off keying signaling with a signal quality factor better than 7 for 8 consecutive comb lines, as well as 25 Gbps signaling with a signal quality factor better than 7 for one isolated comb line, both without forward error correction. Resonant ring modulators and Germanium waveguide photodetectors are further hybridly integrated with chip scale driver and receiver electronics, and their co-operability tested. These experiments will serve as the basis for assessing the feasibility of a silicon photonics wavelength division multiplexed link relying on a single section mode-locked laser as a multi-carrier light source.

WDM transceiver with semiconductor mode locked laser

We demonstrate a Silicon Photonics transmitter/receiver pair wire bonded to chip-scale electronics and operated with a single section semiconductor mode locked laser. The compact WDM system supports twelve independent error free (BER<;1e-12) 14 Gbps channels without error correction, preemphasis or equalization.