Ultra-broadband low-noise gain-flattened rare-earth-doped...

Ultra-low RIN fiber light source

Ultra-wide bandwidth fiber based optical amplifier

Ultra-wide bandwidth optical amplifier

Ultrashort optical pulse amplifiers incorporating a gain medium

Ultraviolet light source, laser treatment apparatus...

Unequal couplers for multimode pumping optical amplifiers

Unidirectional amplification for bi-directional transmission usi

Unidirectional optical amplifier

Unidirectional optical amplifier

Universal controller for an optical amplifier that operates...

Universal controller for an optical amplifier that operates...

Unpolarized multi-lambda source

Upgradable, gain flattened fiber amplifiers for WDM...

Upgradable, gain flattened fiber amplifiers for WDM...

Use of a photonic crystal for optical amplifier gain control

Use of aperiodic quasi-phase-matched gratings in ultrashort puls

Use of OPA for switching and routing in WDM networks

Using gain tilt for local compensation of unwanted power...

Utilization of Yb: and Nd: mode-locked oscillators in...