OPTICAL WDM TRANSCEIVER MODULE USING WAVELENGTH-SELECTIVE COUPLER ANDWDM-PD FOR OPTICAL ACCESS NETWORKS

A new optical wavelet division multiplexing (WDM)-transceiver module h as been designed and fabricated for optical access networks. Conventio nal 1.3/1.55-mu m WDM-coupler and Y-branch were replaced by a new wave length-selective coupler in order to reduce module size. A new WDM-pho todiode (PD), which was photosensitive to 1.3 mu m light and transpare nt to 1.55 mu m light, and a 1.55-mu m PD were arranged in series alon g the optical axis. An MQW-FP-LD was used as a 1.3-mu m transmitter. F undamental characteristics were measured and discussed, Evaluation res ults, P-out of 0 dBm, responsivity of 0.36 A/W at 1.31 mu m and 0.74 A /W at 1.55 mu m, and IMD2 of -76.2 dBc, imply that this WDM-transceive r module design is promising to application for optical access network s.