Data erasure in Fabry–Perot Diode Lasers: effects of facet reflectivity

ABSTRACT

In this study, the effects of facet reflectivity on the data erasure ability of injection-locked Fabry Perot Laser Diode (FPLD), based on a remodulation method in wavelength division multiplexed passive optical network (WDM PON), were investigated. For this purpose, the feasible front facet reflectivity of FPLD was determined as between 0.2% and 7%, depending on the specified injected power interval. Firstly, the system carried out analysis without applying data at the user end to comprehensively demonstrate how much downstream data was completely erased in FPLD. Then, 2.5 Gb/s of non-return-to-zero (NRZ) data was applied and the results compared with the erased downstream signal without data. The results show that upstream transmission improved with an increase in facet reflectivity between 0.2% and 7%.

KEYWORDS:

• Wavelength-division multiplexed passive optical network (WDM PON)
• remodulation
• facet reflectivity
• colourless optical sources
• Fabry Perot Laser Diode (FPLD)

Disclosure statement

No potential conflict of interest was reported by the author(s).