| 摘要 |
PURPOSE:To simply remove a required high frequency component by using a half mirror to form delay slave optical signals to be sequentially reduced at its power. CONSTITUTION:An optical signal L1 from a light transmission line 1 is divided into two components by the half mirror 4 through a full-reflection mirror 3, one component is made incident on a light transmission line 2 and the other is made incident on a delay light transmission line 5. When said operation is repeated, optical signals P1(t) transmitted through the transmission line 2 are satisfied with the shown equation and an equivalent result to a case processing the signals by an LPF with the time constant of alpha/(ln2) is obtained, to that a required high frequency component can be simply removed. In the equation, alpha is a delay time based on the transmission line 5 and (t) is time. |
