发明名称 |
MONOLITHIC INTEGRATED OPTICAL AMPLIFIER AND PHOTODETECTOR |
摘要 |
An optical amplifier and photodetector are monolithically integrated, with the photodetector being optically coupled to the optical amplifier through a low rad iative loss and low back reflectivity branching waveguide. Because of the low reflectiv ity, the branching waveguide, although having a truncated wedge tip, is able to redir ect a small portion of optical radiation from the amplifier to the photodetector witho ut deleteriously effecting the performance of the optical amplifier. The branching waveguide is realized by employing between the branches of the waveguide, a junction region having a gradual decrease in effective refractive index such as to decrease the difference between the refractive indices at the optical interface of the truncated wedge tip as seen by optical radiation incident thereto from the optic al amplifier.
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申请公布号 |
CA2041706(A1) |
申请公布日期 |
1992.02.04 |
申请号 |
CA19912041706 |
申请日期 |
1991.05.02 |
申请人 |
AMERICAN TELEPHONE AND TELEGRAPH COMPANY |
发明人 |
KOREN, UZIEL;LIOU, KANG-YIH |
分类号 |
G01J1/02;G02B6/12;G02B6/122;H01L21/339;H01L27/15;H01L29/762;H01L31/00;H01S5/00;H01S5/026;H01S5/50;H04B10/12;(IPC1-7):H01S3/02;H01S3/06 |
主分类号 |
G01J1/02 |
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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