If the RIN degradation effect is added to the IC penalty P c , then 1 no longer holds; thus, a simulation including a noise addition model and experiment is conducted to obtain the IC penalty functionality. Experiments Figure 5 shows the experimental setup for the unmodulated IC impairment study. The TWDM-PON has received considerable attention because of its flexibility and scalability, which offer economic benefits in access services. ETRI Journal ; 38 1: The noise currents are calculated according to [13]. 
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We measured the IC-induced power penalty improvement of the 2. Consequently, the total ASE noise is 8. Consequently, the signal performance is degraded, due to the addition of the unmodulated ASE noise.
ETRI Journal ; 38 1: Corresponding Author hanhyub edifor. If the RIN degradation effect is added to the IC penalty P cthen 1 no longer holds; thus, a simulation including a noise addition pjd and experiment is conducted to obtain the IC penalty functionality.
Experiments Figure 5 shows the experimental setup for the unmodulated IC impairment study.
The measured penalty data dotsthe calculated penalty curve dashed line according to 1and the simulated penalty curves solid lines are provided. Sincehe has been an engineering team leader and principal research engineer at Ericsson-LG, Anyang, Rep.
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Hee Yeal Rhy heeyeal. He worked and served as an engineering director at a venture start-up company named Novera Optics, Daejeon, Rep. He is a member of the Optical Society of America. This is because of the d Max condition described in He is currently in charge of optical access technology development as a director.
The TWDM-PON has received considerable attention because of its flexibility and scalability, mpd offer economic benefits in access services. The maximum value of d Max is limited by the following equation:. Recently, he is working on software-defined networks and network function virtualization. Considering that the ASE noise is unmodulated, the IC-induced power penalty depends on both the extinction ratio ER reduction and intensity noise addition to the wanted signal within a receiver bandwidth, as illustrated in Fig.
Here, in an extension of our previous result [11]we investigate the aforementioned IC-induced power penalty by means of a editir and experiments. It means that the IC-induced power penalty should be negligible for an upstream signal transmission.
The units are dB or dBm. Figure 8 b shows the optical spectra of the signals with and without the OBPF.
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A large incoherent crosstalk IC caused by amplified spontaneous emission ASE noise power from Tx-disabled optical network units and a differential path loss has been shown to degrade upstream transmission performance in time-division multiplexing passive optical networks. Edifor has served as a technical committee member of both the Optical Fiber Communications Conference and the OptoElectronics and Communications Conference.
Hence, we study the IC impairment that arises as a result of these two significant factors. Sincehe has been with ETRI, where he has been both a senior and principal member of the engineering staff. He was also an executive director of the Optical Internet Research Department. He has worked on optical access networks and has contributed to the development of international standardizations.
Figure 6 a shows a comparison indicating the effective ER reduction of the signal. Figure 1 a illustrates an upstream burst transmission, which consists of a transmitter Tx enable transient time, burst transmission, and Tx disable transient time.
He is a member of the IEEE. The splitter loss L splitter is calculated assuming a 3 dB loss for each 1: Han Hyub Lee corresponding author, hanhyub etri. A signal is modulated at 2. Notes Han Hyub Lee corresponding author, hanhyub etri.
We propose an optical filtering method to mitigate an IC-induced power penalty.
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