The Sourcelight Technologies SLQS-40G-ESR4 is a Four-Channel, Pluggable, Parallel, Fiber-Optic QSFP+ Transceiver for 40Gigabit Ethernet Applications. This transceivers is a high performance module for short-range multi-lane data communication and interconnect applications. It integrates four data lanes in each direction with 40 Gbps bandwidth. Each lane can operate at 10.3125 Gbps up to 300 m using OM3 fiber or 400 m using OM4 fiber.

These modules are designed to operate over multimode fiber systems using a nominal wavelength of 850nm. The electrical interface uses a 38 contact edge type connector. The optical interface uses an 12 fiber MTP (MPO) connector. This module incorporates Sourcelight Technologies proven circuit and VCSEL technology to provide reliable long life, high performance, and consistent service.