HU researchers develop a light amplifier for efficient fiber optic networks: The nano-repeater has succeeded in amplifying light in a glass fiber in just one direction - Technology Park Berlin Adlershof
ZigBee 3.0 20dBm RF Signal Repeater Router Booster Extender,Work with Echo Plus, SmartThings Hub,Tuya, eWeLink, Hue, zigbee2mqtt| | - AliExpress
Connecting a Hue Bridge with an Access Point/wifi extender : r/Hue
What Is the Max Range of Philips Hue's Network? - Smart Home Winner