Optical power limiting amplifier

Optical power monitor and optical amplifier having the optical p

Optical power transient control scheme for EDFA amplifiers

Optical pre-amplifier apparatus and method for receiver...

Optical pre-amplifier apparatus and method for receiver...

Optical protection switching system

Optical protection switching system

Optical pulse amplifier

Optical pulse generator and optical pulse testing instrument...

Optical pump unit for an optical amplifier

Optical receiver apparatus

Optical receiver having a function for suppressing useless inten

Optical receiver having a function for suppressing useless inten

Optical receiver with extended dynamic range

Optical repeater

Optical repeater having independently controllable...

Optical repeater having redundancy

Optical repeaters

Optical signal amplification apparatus and an optical fiber tran

Optical signal amplifier