| 摘要 |
PROBLEM TO BE SOLVED: To prevent the accumulation of crosstalk and ASE noise and the influence of reflection return light by arranging face-type optical multifunctional elements so that the light amplification wavelength bands differ from those of adjacent face-type optical multifunctional elements. SOLUTION: 500 face light-emitting elements 9 and 1000 face-type optical multifunctional elements 10 are mounted on respective optical interconnection chips 1. The positions of the face-type optical elements 9 and 10 are designated by the coordinates of (X, Y) (X=1-105, Y=1-10). The face light-emitting elements 9 are arranged on the positions of X=1, 22, 43, 64 and 85, and the face-type optical multifunctional elements 10 on positions except for the above positions. The transmission wavelengths and the optical amplification wavelengths of the face-type optical elements 9a and 10a whose X+Y is odd are set in a wavelength band with λ1 =1.29μm as a center, and the transmission wavelength and the optical amplification wavelength of the face-type optical elements 9b and 10b whose X+Y is even are set in the wavelength band with λ2 =1.31μm as the center. Thus, the wavelengths of signal light and ASE noise light, which leak from adjacent channels, are out of the amplification wavelength bands of the face-type optical multifunctional elements. |
