发明名称 |
Method and apparatus for control of lasing wavelength in distributed feedback lasers. |
摘要 |
A method and apparatus for control of lasing wavelength in distributed feedback lasers using an improved waveguide. The waveguide comprises a periodic structure or grating and an active stripe which is oriented at a nonzero angle THETA with respect to a line perpendicular to the lines of the grating. Incremental changes in the operating wavelength of a plurality of lasers can be achieved by forming the active stripe of each waveguide of each laser at a different angle THETA . This method and apparatus provides a fine degree of control over the operating wavelength of distributed feedback lasers and is particularly useful in high capacity optical communications networks. <IMAGE> |
申请公布号 |
EP0641053(A1) |
申请公布日期 |
1995.03.01 |
申请号 |
EP19940306042 |
申请日期 |
1994.08.17 |
申请人 |
AT&T CORP. |
发明人 |
TSANG, WON-TIEN |
分类号 |
H01S3/1055;H01S5/00;H01S5/026;H01S5/06;H01S5/12;H01S5/40 |
主分类号 |
H01S3/1055 |
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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