Optical spectrum analyzer and method for controlling output of o

Details Optical spectrum analyzer and method for controlling output of o Optical spectrum analyzer and method for controlling output of o

1996-09-06

1999-01-19

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

359134, 356 72, H01S 300, G01N 2100

Patent

active

058619801

ABSTRACT:
Disclosed is an optical spectrum analyzer which has: a pulse oscillator for generating a pulse; an optical switch for switching a signal light in response to the pulse; an optical circulator which has at least three input-output ports and in which the output of the optical switch is connected to a first port of the optical circulator; a plurality of fiber gratings which are in series connected to a second port of the optical circulator to which a signal light entered into the first port is output, the fiber gratings having different Bragg wavelengths, respectively; and an optical detector which is connected to a third port of the optical circulator to which a reflected light from the fiber gratings is output.

REFERENCES:
patent: 5268786 (1993-12-01), Matsushita et al.
patent: 5463487 (1995-10-01), Epworth
patent: 5532864 (1996-07-01), Alexander et al.
patent: 5557442 (1996-09-01), Huber
patent: 5570221 (1996-10-01), Fujita
patent: 5636054 (1997-06-01), Artigaud et al.
H. Toba, et al., "16-channel Optical FDM Distribution/Transmission Experiment Utilizing ER.sup.3+ -Doped Fibre Amplifier", Electronics Letters, Jul. 6, 1989, vol. 25, No. 14.
Y. Nakabayashi, et al., "Er:Doped Fiber Amplifier for WDM Transmission Using Fiber Gain Control", Technical Report of IEICE, OCS94-66, OPE94-89 (1994-Nov.).

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