Abstract
We report triple wavelength demultiplexers adopting a thin-film filter (TFF) and a waveguide Bragg grating as
a reflector for low-cost integrated optical triplexer transceivers deployed for the triple play service-based
fiber-to-the-home (FTTH) networks. In the proposed demultiplexers, 1310- and 1550-nm lights were designed to be
divided after passing the planar lightwave circuit-based directional coupler by half-cycle and full-cycle coupling
actions, respectively. The 1490-nm light was reflected by a TFF or Bragg grating. The losses of the demultiplexers
were less than 2.0 dB at all ports. The average crosstalk among the three lights for the demultiplexers was about 20 dB or better. Through a single reflector, the demultiplexer
structures are significantly simplified, and cost is reduced. The proposed triple wavelength demultiplexers provide
cost-effective and high-performance solutions for FTTH network systems.
© 2007 IEEE
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