Field trial of the 40 Gb/s ETDM prototype over 219 km of the installed single‐mode fiber

Abstract

liptic-groove is allowed, and both dispersion and loss for the dominant mode are decreased. Therefore, the closed ellipticgroove guide is an ideal transmission line for short millimeter and submillimeter waves, particularly under high-power conditions. The eccentricity of the elliptical groove needs to be as small as possible, and the separation of the parallel plates needs to be as large as possible, for both design and application. Relative quantities have been used in our results, as they are very convenient in applications of the elliptic-groove guide made by using different materials and dimensions. REFERENCES 1. F.J. Tischer, The groove guide, a low-loss waveguide for millimeter waves, IEEE Trans Microwave Theory Tech 11 (1963), 291-296. 2. Y.M. Choi, D.J. Harris, and K.F. Tsang, Theoretical and experimental characteristics of single V-groove guide for X-band and 100-GHz operation, IEEE Trans Microwave Theory Tech 36 (1988), 715-722. 3. H. Yang, J. Ma, and Z. Lu, Circular groove guide for short millimeter and submillimeter waves, IEEE Trans Microwave Theory Tech 43 ABSTRACT: We demonstrate a field trial of the 40 Gb/s single-channel electrical time-division multiplexing (ETDM) prototype by using KT's installed single-mode fiber (SMF). The prototype consists of a 40-Gb/s optical transmitter, receiver, and four sets of optical amplifiers. In order to provide a practical and economical field trial, we adopt conventional erbium-doped fiber amplifiers (EDFAs) and precise dispersion compensation technology. We obtain the power penalties of 0.5 dB for 10 Gb/s tributary channels after transmission of 219 km. ABSTRACT: A subharmonic injection-locked balanced oscillator is presented in this paper. Subharmonic injection locking is preferred to fundamental injection locking, because the central injection point is a virtual short-circuit at the fundamental frequency for a balanced oscilla-tor. An analytical model is described to predict the locking range whereby power series are used to model the device's nonlinearity. An injection-locked balanced oscillator is designed at 5.8 GHz and very good agreement is achieved between the predicted and measured locking ranges.

Field trial of 1.6 Tb/s (40 channels x 40 Gb/s) NRZ signals over 511 km standard single mode fiber using conventional optical amplifiers

“…In addition to the laboratory transmission experiment, many field trials have been reported [7][8][9][10][11]. The practical technologies are preferred in actual field where the cost and reliability of the equipment are very important factors.…”