| 发明名称 |
WAVELENGTH VARIABLE FILTER |
| 摘要 |
PROBLEM TO BE SOLVED: To provide a fast wavelength variable filter that is driven at a low voltage. SOLUTION: The wavelength variable filter is an array optical waveguide lattice wavelength variable filter having an array optical waveguide composed of a plurality of three-dimensional optical waveguides comprising a crystal material having a composition of at least one of KTa<SB>1-x</SB>Nb<SB>x</SB>O<SB>3</SB>(0<x<1) and K<SB>1-y</SB>Li<SB>y</SB>Ta<SB>1-x</SB>Nb<SB>x</SB>O<SB>3</SB>(0<x<1, 0<y<1), and electrodes disposed on the three-dimensional optical waveguides. The array optical waveguide lattice wavelength variable filter includes a waveguide electro-optical phase shifter having two electrodes disposed opposite to each other and parallel to each other across the three-dimensional optical waveguide with respect to one channel optical waveguide. COPYRIGHT: (C)2008,JPO&INPIT
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| 申请公布号 |
JP2008065354(A) |
申请公布日期 |
2008.03.21 |
| 申请号 |
JP20070297839 |
申请日期 |
2007.11.16 |
| 申请人 |
NIPPON TELEGR & TELEPH CORP <NTT> |
发明人 |
TOYODA SEIJI;FUJIURA KAZUO;SASAURA MASAHIRO;ENBUTSU KOUJI;SHIMOKOZONO MAKOTO;IMAI TADAYUKI;TATE AKIYUKI;MATSUURA TORU;KURIHARA TAKASHI;FUSHIMI HIROSHI |
| 分类号 |
G02F1/035;G02F1/313 |
主分类号 |
G02F1/035 |
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