公开(公告)号：EP0919840A4

公开(公告)日：2005-01-12

申请号：EP98902764

申请日：1998-02-16

申请人： NIPPON TELEGRAPH & TELEPHONE ,  NTT ELECTRONICS CORP

发明人： INOUE YASUYUKI ,  KANEKO AKIMASA ,  TAKAHASHI HIROSHI ,  HANAWA FUMIAKI ,  HATTORI KUNINORI ,  YOKOYAMA KENJI ,  SUZUKI SENICHI ,  SUMIDA SHIN ,  OKAMOTO KATSUNARI ,  ISHII MOTOHAYA ,  YAMADA HIROAKI ,  YOSHIDA TAKASHI ,  ARISHIMA KOICHI ,  EBISAWA FUMIHIRO ,  NAKAHARA MOTOHIRO

IPC分类号： G02B6/34 ,  G02B6/12

CPC分类号： G02B6/12011 ,  G02B6/12014 ,  G02B6/12023 ,  G02B6/12028

摘要： An optical waveguide circuit includes a plurality of waveguides with different lengths. Grooves (12) are formed in the waveguide by removing the upper cladding and the core of the waveguide (4) or by removing the upper cladding, the core and the lower cladding of the waveguide (4), and filled with a material (10) which have a refractive index temperature coefficient whose sign is different from the temperature coefficient of the effective refractive index of the waveguide. The difference between the lengths of the removed parts of the adjacent waveguides is proportional to the difference between the lengths of the remaining parts of the adjacent waveguides.

摘要翻译： 在光波导电路包括具有不同长度的波导的复数，具有折射率的温度系数的材料（10）包括一个符号differentFrom做了（4）被加入到波导的有效折射率的温度系数的 通过去除上部包和从所述波导（4）的芯或通过去除上部包覆，芯和从波导管（4）的下部包层形成的凹槽（12）形成的槽（12）。 在相邻的波导之间的去除部分的长度之差正比于哪个未删除及剩余波导的长度差。