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http://dx.doi.org/10.3807/JOSK.2011.15.3.227

External Optical Modulator Using a Low-cost Fabry-Perot LD for Multicasting in a WDM-PON  

Lee, Hyuek-Jae (Division of Information & Communication Engineering, Kyungnam University)
Publication Information
Journal of the Optical Society of Korea / v.15, no.3, 2011 , pp. 227-231 More about this Journal
Abstract
An external optical modulation using absorption s in a Fabry-Perot laser diode (FP-LD), has been proposed and experimentally demonstrated for multicasting in a WDM-PON. The center wavelengths of absorption s in an FP-LD move to short-wavelength rapidly by only a small current (~1 mA) injection. If the current injection is stopped, the s move back to the original position. Such a movement of the s can make the FP-LD act as an external optical modulator, which is found to modulate at a maximum modulation speed of 800 Mbps or more. For a multicasting transmitter in a WDM-PON, the proposed modulator can be cost-effectively applied to a multi-wavelength laser source with the same periodicity of the longitudinal mode. Instead of the multi-wavelength laser source, tunable-LDs are used for experiments. The 32 channel multicasting system with the proposed modulator has been demonstrated, showing power penalties of 1.53~4.15 dB at a bit error rate of $10^{-9}$ with extinction ratios better than 14.5 dB at 622 Mbps.
Keywords
External optical modulator; Fabry-Perot laser diode; Passive optical network; Multicasting;
Citations & Related Records
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Times Cited By Web Of Science : 1  (Related Records In Web of Science)
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