Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2006-04-11
2006-04-11
Font, Frank G. (Department: 2883)
Optical: systems and elements
Optical amplifier
Optical fiber
C359S337000, C359S337100, C359S337110, C359S337130, C359S341100, C359S341200, C356S073100
Reexamination Certificate
active
07027217
ABSTRACT:
An optical pulse testing apparatus incorporating an optical pulse generator composed of low cost components. The optical pulse testing apparatus comprises: a ring optical path including an optical fiber30with a rare earth element added to; an excitation light source32which enters excitation optical pulses into the optical fiber30; an optical branching filter38for branching the circulating optical pulses circulating through the ring optical path to emit output optical pulses; and a photodetector40for detecting the circulating optical pulses circulating through the ring optical path to obtain signals indicative of a light intensity and a generation timing of the circulating optical pulses. Thus, the optical pulse generator, and the optical pulse testing apparatus and method using the optical pulse generator require no expensive optical parts and complicated device control.
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Advantest Corp.
Font Frank G.
Lepisto Ryan
Muramatsu & Associates
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