Optical waveguides – With optical coupler – Particular coupling function
Patent
1998-08-13
2000-07-25
Henry, Jon
Optical waveguides
With optical coupler
Particular coupling function
385 24, 359128, G02B 628, G02B 635
Patent
active
060945141
ABSTRACT:
A gain measuring apparatus of a multi-channel optical fiber amplifier for amplifying an input multi-channel optical signal of a predetermined wavelength range includes a plurality of optical signal sources for generating an optical signal, the number of optical signal sources being less than the number of channels of the multi-channel optical signal, in a wavelength range of the multi-channel optical signal, a probe optical signal source for generating a probe signal of a wavelength of which gain is subject to measurement, an optical multiplexer for multiplexing optical signals output from the optical signal sources and the probe optical signal source, an optical amplification portion for splitting the optical signals multiplexed by the optical multiplexer in an equal ratio and passing one optical signal of the split optical signal with amplification and the other optical signal of the split optical signal without amplification, and a measuring system for respectively measuring intensities of the amplified probe optical signal at the optical amplification portion and the probe optical signal that is not amplified at the optical amplification portion. When the gain of multi-channel erbium doped fiber amplifier is measured, the signal gain of each channel can be accurately measured using less optical signal sources than the number of light sources corresponding to each channel.
REFERENCES:
patent: 5223705 (1993-06-01), Aspell et al.
patent: 5781322 (1998-07-01), Uchimaya et al.
Bushnell Esq. Robert E.
Henry Jon
Samsung Electronics Co,. Ltd.
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