| 发明名称 |
OPTICAL SIGNAL DEMODULATOR, OPTICAL SIGNAL DEMODULATING METHOD, AND OPTICAL ADD-DROP MULTIPLEXER |
| 摘要 |
An optical signal demodulator includes: an obtaining unit configured to obtain a spectrum of an optical signal generated by a second signal being superimposed on a first signal using frequency modulation; an identifying unit configured to identify a peak wavelength which is a wavelength corresponding to a peak position of the spectrum; and a demodulating unit configured to demodulate the second signal from the optical signal using a wavelength-variable filter to which a transmitted wavelength band has been set based on the peak wavelength. |
| 申请公布号 |
US2014270781(A1) |
申请公布日期 |
2014.09.18 |
| 申请号 |
US201314065999 |
申请日期 |
2013.10.29 |
| 申请人 |
FUJITSU LIMITED |
发明人 |
NAKAGAWA Goji;SONE Kyosuke;ODA Shoichiro;AOKI Yasuhiko |
| 分类号 |
H04B10/60;H04J14/02 |
主分类号 |
H04B10/60 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical signal demodulator, comprising:
an obtaining unit configured to obtain a spectrum of an optical signal generated by a second signal being superimposed on a first signal using frequency modulation; an identifying unit configured to identify a peak wavelength which is a wavelength corresponding to a peak position of the spectrum; and a demodulating unit configured to demodulate the second signal from the optical signal using a wavelength-variable filter to which a transmitted wavelength band has been set based on the peak wavelength. |
| 地址 |
Kawasaki-shi JP |
