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We review the recent work of distributed-feedback(DFB) multi-wavelength semiconductor laser arrays(MWLAs) based on the reconstruction equivalent chirp(REC) technique. The experimental results show that the proposed MWLA has very high wavelength precision(< ± 0.1 nm), while the fabrication cost is low. Only one step of holographic exposure and another step of photolithography are required for grating fabrication.The packaging technique for a high-bandwidth analog DFB laser and laser array was developed. A directly modulated MWLA transmitter module was achieved. In addition, an improved MWLA with an integrated reflector was proposed and successfully applied in a radio-over-fiber system.
We review the recent work of distributed-feedback (DFB) multi-wavelength semiconductor laser arrays (MWLAs) based on the reconstruction equivalent chirp (REC) technique. The experimental results show that the proposed MWLA has very high wavelength precision (<± 0.1 nm only one step of holographic exposure and another step of photolithography are required for grating fabrication. the packaging technique for a high-bandwidth analog DFB laser and laser array was developed. A directly modulated MWLA transmitter module was In addition, an improved MWLA with an integrated reflector was proposed and successfully applied in a radio-over-fiber system.