Colorless WRC-FPLDs subject to gain-saturated RSOA feedback for WDM-PONs
Journal
IEEE Photonics Technology Letters
Journal Volume
30
Journal Issue
1
Pages
43-46
Date Issued
2018
Author(s)
Abstract
A directly modulated, colorless, weak-resonantcavity Fabry-Perot laser diode (WRC-FPLD)-based transmitter is, for the first time, proposed and experimentally demonstrated for wavelength-division multiplexed passive optical networks (WDM-PONs). The transmitter utilizes optical gainsaturated reflective semiconductor optical amplifier (RSOA)induced feedback and is free from external optical injection. Experimental investigations are undertaken of the impact of RSOA-feedback dynamic mechanisms on directly modulated output optical signals and corresponding colorless transmission performances for various system architectures. It is shown that the coherent-like optical source produced by the proposed transmitter architecture offers an output wavelength tunable range as large as 65 nm with side-mode suppression ratios (SMSRs) of >37 dB. In simple 25-km single-mode fiber intensity modulation and direct detection WDM-PON systems, the colorless transmission of directly modulated 7.5-Gb/s optical orthogonal frequency-division multiplexed signals is experimentally achieved over a wavelength tunable range of 35 nm, during which -3 are also experimentally obtainable.
SDGs
Type
journal article