RSoft's OptSim 4.5 supports OCDMA and 10-GbE multimode systems
July 20, 2005 Ossining, NY -- RSoft Design Group, a provider of photonics design automation software, has released its OptSim 4.5. The company says the release improves the overall usability of the tool for major applications such as optical code division multiple access (OCDMA) and 10-Gigabit Ethernet (GbE) multimode systems.
According to the company, in OptSim 4.5, new documentation, application notes, and examples provide comprehensive guidance on how to design optimal OCDMA and 10-GbE multimode systems. The company says the tool enables the user to enhance the spectral efficiency and reduce the multiple-access interference (MAI) of OCDMA systems. With the tool, multimode fiber's manufacturing imperfections and components' misalignments can be taken into account to assess the performance and optimize the design of 10-GbE multimode systems based on the IEEE 802.3 ae standard.
OptSim 4.5 also includes new documentation, application notes, and examples of both FTTH/FTTP and FSO communication systems. The company says the tool enables the user to optimize the fiber length, the splitting ratio, and the number of optical network termination (ONT) units for FTTH/FTTP systems employing passive optical network (PON) architectures. The turbulences of free space signal propagation can also be taken into account to study the performance variation and optimize the geometry of FSO links.
OptSim 4.5 also includes a SBS modeling feature, which simulates the interaction of light with acoustic waves within optical fibers. When power levels surpass a certain threshold, the acoustical-optical interaction produces a non-linear effect, which backscatters light and degrades optical signal quality. For CATV analog RF video transmission, SBS can have significant detrimental effect on the carrier-to-noise ratio (CNR), according to the company.
Other new features of OptSim 4.5 include an improved interface with the company's BeamPROP passive component design tool, allowing comprehensive mixed-level simulation of the optical communication system; an Er-Yb co-doped double clad fiber amplifier model; improved VCSEL optical phase modeling; a built-in library of commercial multimode fibers; and a new vortex lens model.