发明名称 |
HIGH SPEED BROADBAND WAVELENGTH TUNABLE FILTER AND FILTERING METHOD WITH ENHANCED STABILITY AGAINST ENVIRONMENTS |
摘要 |
PURPOSE: A high speed broadband wavelength tunable filter and a filtering method thereof are provided to obtain a wider wavelength tunable band than a voltage signal frequency by changing a distance difference due to a birefringence with a voltage signal applied to an optical phase modulator. CONSTITUTION: A polarizer(111) receives light with polarization and outputs input light corresponding to the light with polarization. A half wave plate(114) changes the mode of input light. An optical coupler(113) divides optical power of the input light with a preset ratio and transmits the divided optical power. An optical phase modulator(115) changes the phase of the input light. A polarized beam splatter(112) transmits the input light transmitted from the polarizer to the optical coupler. A first optical path(122,123,124) connects the half wave plate, the optical phase modulator, and the optical coupler with a loop type. A second optical path(121,125) connects the polarized beam splitter and the optical coupler with a loop type.
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申请公布号 |
KR20100099595(A) |
申请公布日期 |
2010.09.13 |
申请号 |
KR20090018158 |
申请日期 |
2009.03.03 |
申请人 |
KNU-INDUSTRY COOPERATION FOUNDATION;PARK, SEUNG KWANG |
发明人 |
EOM, JIN SEOB;AHN, SANG HO;PARK, SEUNG KWANG |
分类号 |
G02B6/293;G02B6/26;G02B6/27 |
主分类号 |
G02B6/293 |
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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