Optical frequency-interleaved DWDM multiplexing using an arrayed wavegudie grating for mm-wave-band radio-on-fiber systems

摘要

We demonstrate an optical frequency-interleaved dense wavelength division multiplexing (DWDM) multiplexing scheme using an arrayed-waveguide grating for mm-wave band radio-on-fiber (ROF) systems. The scheme allows us to filter out undesired sidebands and to simultaneously enhance the modulation indices of the multiplexed ROF signals. No noticeable power penalty was observed due to 25-km SMF transmission and interchannel interference. The receiver sensitivity was improved by 6 dB by increasing the modulation index of the ROF signal.