发明名称 |
POLARIZATION MAINTAINING FIBER, FIBER AMPLIFIER, AND FIBER LASER |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fiber increased in polarization maintaining ability while reducing the amount of polarization mode coupling and polarization mode dispersion, and to provide a highly efficient fiber amplifier or laser with a large outer diameter for maintaining polarization so that pump light is guided in an inside clad while a large outside clad ensures the decrease of fiber core inner mode coupling. <P>SOLUTION: The polarization maintaining fiber has a fiber core of multimode having an elliptic cross section; a first clad that surrounds the fiber core; a second clad that surrounds the first clad, and a coating that surrounds the second clad. The first clad has a circular cross section, and the second clad has a noncircular cross section. Single mode light is propagated to the fiber core. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
申请公布号 |
JP2009205174(A) |
申请公布日期 |
2009.09.10 |
申请号 |
JP20090142237 |
申请日期 |
2009.06.15 |
申请人 |
IMRA AMERICA INC |
发明人 |
FERMANN MARTIN E;HARTER DONALD J DR |
分类号 |
G02B6/02;G02B6/024;G02B6/036;G02B6/44;H01S3/06;H01S3/067;H01S3/094;H01S3/098;H01S3/10 |
主分类号 |
G02B6/02 |
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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