The PT-40G-LR4-31 converts the 4-channel 10Gb/s electrical input data into CWDM optical signals (light), by a driven 4-wavelength Distributed Feedback Laser (DFB) array. C-LIGHT independently developed 40G QSFP+ optical module covers transmission distances of 100m, 150m, 300m, 10km, 40km, 80km, and 90km, and supports rates up to 40Gb/s. Its communication protocol complies with IEEE802. 3ba-2018; the interface protocol complies with SFF-8436; and the packaging. Profitap PT-40G-LR4-31 is a transceiver designed for 10Km optical communication applications. Click to get your 40G QSFP+ transceiver modules from nearby warehouses. 3125Gbps up to 100 m using OM3 fiber or 150 m using OM4 fiber.