Abstract
A 1.5%-/spl Delta/ silica directional coupler-type wavelength-division multiplexer dividing 1310/1550-nm wavelength bands was used to develop a bidirectional optical transceiver module. The active devices such as a spot-size converted Fabry-Pe/spl acute/rot laser diode and waveguide photodetectors were hybridly integrated on a silica-terraced planar lightwave circuit platform. As main performances of the module, the clear eye pattern and the minimum receiver sensitivity of -25.5 dBm were obtained under the full duplex operation at 1.25 Gb/s without a severe power penalty.
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