| 摘要 |
PURPOSE:To realize the optical communication equipment in which dispersion distortion caused in a transmission line is easily equalized from an optical intensity modulation light sent through the transmission line with large dispersion. CONSTITUTION:A transmission unit 100 is provided with a semiconductor laser 101 being a carrier light exciting source, a bias source 102 giving a DC bias to the semiconductor laser 101, an external modulator 105 applying intensity modulation to an output light of the semiconductor laser and an optical filter 107 as a means outputting only a carrier light and a one-side band light as an external modulation light output. A reception unit 150 is provided with a receiver 151 applying square detection to the carrier light and the one-side band light supplied from the transmission unit 100 to obtain an electric signal and a linear filter 152 equalizing the electric signal. |
