| タイトル | Length minimization design considerations in photonic integrated circuits incorporating directional couplers |
| 著者（英） | Boyd, Joseph T.; Kauffman, Michael T.; Radens, Carl J. |
| 著者所属（英） | NASA Headquarters; NASA Lewis Research Center |
| 発行日 | 1991-01-01 |
| 言語 | eng |
| 内容記述 | Because directional couplers involve channel waveguides which are very close to one another, transition regions to regions where channel waveguides are widely separated are utilized. The total length of a directional coupler and transition regions can be minimized for a particular degree of field confinement. Calculations presented for LiNbO3-, GaAlAs-, and SiO2/Si-based optical channel waveguides demonstrate the presence of a minimum total length corresponding to a particular degree of field confinement. The overall length at the minimum is shown to be significantly lower than for other values of field confinement allowing single-mode operation. This implies that either more devices can be integrated on a substrate or that less material is needed for an integrated optical circuit. |
| NASA分類 | OPTICS |
| レポートNO | 92A46240 |
| 権利 | Copyright |
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