Based on this product's specifications, here are some alternatives and similar models
SFP Transceiver Module Intellinet GLC-BX-D Equivalent
Summary description:
The Intellinet SFP Transceiver Module is a Gigabit Fiber WDM Bi-Directional device with a 1000Base-Lx (LC) Single-Mode Port. It supports a maximum data transfer rate of 1000 Mbit/s and operates over distances up to 10 km. This MSA compliant module features a power consumption of 1 W and dimensions of 14 mm x 57 mm x 12 mm. It is equivalent to Cisco GLC-BX-D and comes with a three-year warranty.