发明名称 |
Adjustment method for optical circuit with cascaded Mach-Zehnder interferometers |
摘要 |
A multistage Mach-Zehnder interferometer type optical circuit including any number of symmetrical Mach-Zehnder interferometers and any number of asymmetrical Mach-Zehnder interferometers connected in cascade. In the optical circuit, low coherence light is used first to obtain individual phase control conditions of the symmetrical Mach-Zehnder interferometers without being affected by the asymmetrical Mach-Zehnder interferometers. Second, phase control conditions of the individual asymmetrical Mach-Zehnder interferometers are obtained by controlling the symmetrical Mach-Zehnder interferometers based on the first phase control conditions. Finally, the characteristic adjustment of the whole multistage Mach-Zehnder interferometer type optical circuit is carried out by controlling all the interferometers based on the phase control conditions of both the symmetrical Mach-Zehnder interferometers and asymmetrical Mach-Zehnder interferometers and setting the phase shift amounts of the individual interferometers at appropriate values. <IMAGE> |
申请公布号 |
EP1380865(A3) |
申请公布日期 |
2004.10.27 |
申请号 |
EP20030015460 |
申请日期 |
2003.07.09 |
申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
TAKIGUCHI, KOICHI;SUZUKI, SENICHI |
分类号 |
G02B6/12;G02B6/34 |
主分类号 |
G02B6/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|