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We propose a novel wavelength adjustable laser (WAL) with a photonic crystal based Fabry-Perot (FP) etalon. This laser will
be a promising light source for optical network units (ONUs) of conventional wavelength-division-multiplexed passive optical
network (WDM-PON) systems for up-stream transmission. It has the merits of a relatively simple fabrication and operation,
wide process tolerance, low-cost, high side-mode suppression ratio, and wavelength-tunable characteristics. The optimization
of the device structure and the implementation methods for this type of laser are discussed. Although the WALs in WDM-PON
systems are not colorless, each laser can cover several wavelengths. Thus, the required number of different ONUs can be reduced.
This approach may be necessary for 10 Gbps upstream transmission in next-generation optical access networks because the 10
Gbps data rate is difficult to achieve by using current colorless schemes. 相似文献
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