Based on this product's specifications, here are some alternatives and similar models
SFP transceiver BlueOptics 10052H-BO Fiber optic 1250 Mbit/s
Summary description:
The BlueOptics 10052H-BO is a fiber optic SFP transceiver with a maximum data transfer rate of 1250 Mbit/s. It is compatible with Extreme Networks products and certified with RoHS, CE, FCC, and ISO9001. Weighing only 20 g, it is designed for efficient data transmission in networking applications.