Not exactly the same. Although fiber modems and modem routers are similar in some ways, they are actually two different devices with slightly different uses and functions.
Fiber Modem: A fiber modem is a device specifically designed to connect to an optical fiber network, convert data into a format suitable for transmission over optical fiber, and transmit data in the optical fiber network. It is usually used to connect computers, routers or other network devices to optical fiber networks to achieve high-speed and stable data transmission.
Modem Router: A modem router is a multi-functional device that combines the functions of a modem and a router. It is typically used to connect to an Internet Service Provider's (ISP) network and convert digital signals into analog signals (modulation), and analog signals into digital signals (demodulation). At the same time, it also has the function of a router, which can provide LAN connection, Wi-Fi connection and other functions in the local network.
In summary, a fiber optic modem is more focused on fiber optic network connectivity, while a modem router is a more comprehensive device that provides both network connectivity and routing and LAN functionality.