Upyong Hong

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We demonstrate a long-reach wavelength-division-multiplexed passive optical network (WDM PON) operating at the symmetric rate of 10.3 Gb/s. For the cost-effectiveness, we realize the upstream transmission by utilizing directly-modulated TO-can packaged reflective semiconductor optical amplifiers (RSOAs) and digital coherent receivers. In addition, to(More)
We demonstrate the 40-Gb/s upstream transmission in the 60-km reach wavelength-division-multiplexed passive optical network (WDM PON) implemented by using directly modulated reflective semiconductor optical amplifiers (RSOAs) and self-homodyne receivers. It is difficult to operate the RSOA at 40 Gb/s due to its limited modulation bandwidth. To overcome this(More)
The neural responses of Korean speakers were recorded while they read sentences that included local semantic mismatch between adjectives (A) and nouns (N) or/and global semantic mismatch between object nouns (N) and verbs (V), as well as the corresponding control sentences without any semantic anomalies. In Experiment 1 using verb-final declarative(More)
It has been recently reported that reflective semiconductor optical amplifiers (RSOAs) can be used as phase modulators for the cost-effective implementation of the high-speed wavelength-division-multiplexed passive optical networks (WDM PONs). For the detection of the phase-shift-keying (PSK) signal generated by using an RSOA, we should be able to estimate(More)
1 We investigated how closely speakers’ production preferences were interconnected with comprehenders’ processing difficulty, using dative sentences in Korean, based on the behavioral data that we obtained from a production study and an eye-tracking reading study, respectively. In both studies, we tested the long-before-short preference such that long(More)
We propose a simple carrier phase estimation technique for the phase-modulated signal generated by using bandwidth-limited RSOA. By using this technique, we demonstrate 25.78Gb/s QPSK upstream transmission in 60-km reach coherent RSOA-based WDM PON. OCIS codes: (060.1660) Coherent communications; (060.2360) Fiber optics links and subsystems
The discussion of whether the role information encoded by verbs is anticipatorily used in sentence comprehension apart from the world knowledge in the context has been a while. However, in head-initial languages like English, it is difficult to tell apart the use of lexical information like verbs from that of world knowledge information because roles(More)
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