Inventor
CHANG ZHIWEN
CN4 patents
Patents
4 patentsUS11128384B2Sep 21, 2021
Fiber amplifier and gain adjustment method for fiber amplifier
HUAWEI TECH CO LTD3 citations68
US11671179B2Jun 6, 2023
Fiber amplifier and gain adjustment method for fiber amplifier
HUAWEI TECH CO LTD0 citations57
US12470291B2Nov 11, 2025
Fault detection method for optical switching apparatus, network device, and system
HUAWEI TECH CO LTD0 citations41
US8380070B2Feb 19, 2013
Upgrading method, system and apparatus of low-density wavelength division multiplexing system
HUAWEI TECH CO LTD0 citations33