| 摘要 |
PROBLEM TO BE SOLVED: To resolve or at least limit the level difference between different channels of an optical fiber. SOLUTION: This Fabry-Perrot filter includes tow Bragg lattices R1, R2 continued on the same light wave guide channel G, an interval D is provided between two lattices R1, R2, and two lattices R1, R2 have different lengths L1, L2, respectively. |
