发明名称 |
Frequency tunable optical oscillator with fiber grating mirrors |
摘要 |
There is provided a millimeter wave band frequency optical oscillator predicted to be used as a millimeter wave oscillating frequency signal source in a base station of a millimeter wave wireless transmission system. The optical oscillator has a double resonator structure in which a pair of wavelength tunable fiber grating mirrors are inserted into a unilateral fiber-ring laser resonator in order to internally and additionally form a linear laser resonator. The double resonator structure composed of the two stable laser resonators can oscillate laser of two modes. Due to a beat phenomenon occurring between the two modes, received laser is modulated to an ultra-speed frequency of 60 GHz or greater. A variation in the gain within a resonator is induced by a polarization controller using the dependency of laser modes upon polarization. A modulation frequency is consecutively changed from 60 GHz to 80 GHz by controlling the wavelength of light reflected by the fiber grating mirrors.
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申请公布号 |
US6917633(B2) |
申请公布日期 |
2005.07.12 |
申请号 |
US20030376455 |
申请日期 |
2003.03.03 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
KIM HO-YOUNG;NAM EUN-SOO;CHO KYOUNG-IK |
分类号 |
H01S3/05;H01S3/067;H01S3/08;H01S3/082;H01S3/1055;H01S3/16;(IPC1-7):H01S3/10;H01S3/083 |
主分类号 |
H01S3/05 |
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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