Optical amplifier device for wavelength division multiplexing op

Optical amplifier employing an active doped unitary amplifier

Optical amplifier equipment for WDM optical communication

Optical amplifier evaluating method and optical amplifier...

Optical amplifier excitation light source control method for...

Optical amplifier for 1.3 .mu.m band

Optical amplifier for amplifying a signal light and a continuous

Optical amplifier for amplifying a wavelength division...

Optical amplifier for amplifying a wavelength division...

Optical amplifier for amplifying a wavelength division...

Optical amplifier for amplifying light in a long wavelength...

Optical amplifier for amplifying light in a long wavelength...

Optical amplifier for amplifying multi-wavelength light

Optical amplifier for amplifying multi-wavelength light

Optical amplifier for amplifying multi-wavelength light

Optical amplifier for amplifying multi-wavelength light

Optical amplifier for bi-directional WDM optical communications

Optical amplifier for CATV system with forward and reverse paths

Optical amplifier for collectively amplifying optical signals ha

Optical amplifier for use in optical communications equipment