Indian locomotive class WDM-2 - Wikipedia
The Indian locomotive class WDM-2 is a class of diesel–electric locomotive that was developed in 1962 by American Locomotive Company (ALCO) for Indian Railways. The model name stands …
WDM—波分复用（ Wavelength Division Multiplexing ）技术原理 …
2023年4月27日 · WDM，全称Wavelength Division Multiplexing，即波分复用，是一种将多种不同波长的光信号通过合波器汇合在一起，并耦合到同一根光纤中进行数据传输的技术。这种技术 …
New design of all-optical multi-channel wavelength division
2024年5月10日 · In this paper, a new all-optical multi-channel WDM based on a 2D PC waveguide structure with square rods, which has the output flat-top bands was proposed. The …
WDM 2 | 3D CAD Model Library | GrabCAD
2021年1月16日 · Once the king of Indian rolling stock, the WDM 2 is an all time favourite of Indain railfans. These are one of the first generation AlCo locomotives which were used in India from …
Bi-wavelength two dimensional chirped grating couplers for low cost WDM ...
2011年4月15日 · We propose and demonstrate a bi-wavelength two dimensional (2D) waveguide grating coupler on silicon-on-insulator which has efficient coupling of optical light with two …
FDTD TopologyOptimization2D in binary stage,FOM Rapid growth
2021年12月4日 · Topology optimization is always a bit tricky. First, it depends a lot on the initial guess you used as a starting point. It can be useful to try multiple ones (for example, a matrix …
2D-Photonic Crystal based Demultiplexer for WDM Systems – A …
The multiplexer and demultiplexer are playing a prominent role for transmission and reception of light signals in WDM systems. This paper investigates and enumerates the two-dimensional …
2D Photonic Crystal Cavity-Based WDM Multiplexer - IEEE Xplore
We designed an innovative frequency multiplexer based on contra-directional coupling and standing-wave resonators within a photonic crystal (PhC) structure. Three add-drop filters …
WDM and DWDM optical filter based on 2D photonic
2013年10月1日 · By using Wavelength Division Multiplexing (WDM) and Dense Wavelength Division Multiplexing (DWDM) technologies we can increase the capacity of a single optical …
Indian railway Locomotive engine codes decoded/deciphered
2015年3月2日 · WDM-2. In this engine code, W Stands for wide gauge. Other two gauges are Z-narrow gauge and Y- meter gauge. D stands for diesel. That means the engine is powered by …