A TOSA/ROSA-based optical transmitter (MTx+)/transceiver (MTRx+) for high-energy physics experiments

Abstract

We present a dual-channel optical transmitter (MTx+)/transceiver (MTRx+) for the front-end readout electronics of high-energy physics experiments. MTx+ utilizes two Transmitter Optical Sub-Assemblies (TOSAs) and MTRx+ utilizes a TOSA and a Receiver Optical Sub-Assemblies (ROSA). Both MTx+ and MTRx+ receive multimode fibers with standard Lucent Connectors (LCs) as the optical interface and can be panel or board mounted to a motherboard with a standard Enhanced Small Form-factor Pluggable (SFP+) connector as the electrical interface. MTx+ and MTRx+ employ a dual-channel Vertical-Cavity Surface-Emitting Laser (VCSEL) driver ASIC called LOCld65, which brings the transmitting data rate up to 14 Gbps per channel. MTx+ and MTRx+ have been tested to survive 4.9 kGy(SiO2).

GBT20, a 20.48 Gbps PAM4 optical transmitter module for particle physics experiments

“…High-speed optical links are commonly used in modern particle-physics experiments to transmit large-volume data from detectors to counting rooms [1][2][3][4][5]. Future particle-physics experiments have a great demand for high-bandwidth and high-reliability optical links [6].…”

Prototyping of a 25 Gbps optical transmitter for applications in high-energy physics experiments

“…The first version of MTx+ assembly made with components specified for 10 Gbps is evaluated for data transmission and configuration with an I 2 C inter-face. The speed performance is tested and reported for 14 Gbps [3].…”