Question Is it possible to replace my Fiber Optic Router?

Jul 21, 2021
I recently got fiber optic internet, which is great, but I'd love to cut out the rental fees from my ISP and get my own modem. The only problem? The connection in my house is a Fiber To The Premises (FTTP) connection, so there is a fiber optic line going directly into my house. LOTS of modems are available for sale to consumers that connect to co-axial cables, but I haven't seen a single one for fiber. My current rental is made by AdTran who does not appear to sell to individuals. Has anyone had success with finding fiber modems for sale?

For reference, I live on the East coast of the US.