发明名称 |
OPTICAL GAIN EQUALIZER, AND OPTICAL AMPLIFIER AND WAVELENGTH-DIVISION MULTIPLEX TRANSMITTER BOTH COMPRISING THE OPTICAL GAIN EQUALIZER |
摘要 |
<p>In an optical gain equalizer according to the present invention, a plurality of etalon filters 1 and one or more fiber gratings 2 or dielectric multilayer filters 3 are arranged in line, and a beam of light externally applied is passed through the etalon filters 1 and the fiber gratings 2 or dielectric multilayer filters 3 and outputted to the outside, and the etalon filters 1 have sinusoidal wave loss characteristic of the same amplitude and period as those of the term obtained by Fourier series expansion of the loss wavelength characteristic for gain flattening, and the one or more fiber gratings 2 or dielectric multilayer filters 3 compensate the ripple component remaining as the difference between the loss wavelength characteristic for gain flattening and the loss wavelength characteristic owing to the etalon filters 1. An optical amplifying device 14 is constituted by combining an optical amplifier 5 with the optical gain equalizer 4. A wavelength-division multiplex transmitter is constituted by using the optical amplifying device 14. <IMAGE></p> |
申请公布号 |
EP1033794(A1) |
申请公布日期 |
2000.09.06 |
申请号 |
EP19990926911 |
申请日期 |
1999.07.02 |
申请人 |
THE FURUKAWA ELECTRIC CO., LTD. |
发明人 |
MIZUNO, KAZUYO;OZAWA, SHYOICHI;ASO, OSAMU;NAMIKI, SHU;OHTA, IKUO;IRIE, YUICHIRO |
分类号 |
H01S3/067;H01S3/10;H04B10/294;H04J14/02;(IPC1-7):H01S3/06;H04B10/18 |
主分类号 |
H01S3/067 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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