Abstract:
A directly modulated multi-level optical signal generator and a method thereof are provided. The multi-level optical signal generator includes N number of direct modulation lasers (DMLs) configured to directly modulate source light into a 2-level optical signal, and an optical power combiner configured to combine N number of 2-level optical signals directly modulated by the respective DMLs to generate a 2N-level optical signal.
Abstract:
An apparatus and method for controlling a multicarrier light source generator are provided. The apparatus includes N-light source input units configured to input light sources to a multicarrier light source generator that generates multicarrier light sources at a frequency interval of F [Hz], and a control unit configured to adjust the frequency interval of the multicarrier light sources generated from the multicarrier light source generator, by adjusting a frequency interval between the light sources input from the N-light source input unit as F/N [Hz].
Abstract translation:提供一种用于控制多载波光源发生器的装置和方法。 该装置包括N个光源输入单元,其被配置为将光源输入到以F [Hz]的频率间隔产生多载波光源的多载波光源发生器,以及控制单元,被配置为调整多载波光源的频率间隔 通过将从N光源输入单元输入的光源之间的频率间隔调整为F / N [Hz],从多载波光源发生器产生。
Abstract:
A flexible printed circuit board (FPCB) includes at least one signal pad part disposed at each of a top and bottom of a flexible substrate base and configured to include an upper signal pad and a lower signal pad and a through hole formed at a portion corresponding to a signal via, a signal line disposed at the top of the substrate base, and extending from the upper signal pad along a length direction of the substrate base, an upper ground pad disposed at the top of the substrate base to be separated from the upper signal pad and the signal line near the upper signal pad, and a lower ground pad disposed at the bottom of the substrate base to be separated from the lower signal pad near the lower signal pad, and connected to the upper ground pad through a ground via.