Two fibers or one? (a comparison of two-fiber and one-fiber star architectures for fiber-to-the-home applications)

摘要: Issues for consideration when deciding between the two-fiber (2-F) and one-fiber (1-F) architectures fiber deployment in distribution portion of loop are presented. A link-loss assessment both is 1-F star transmission concerns, namely, directivity wavelength isolation, discussed. System upgrade considered. Testing maintenance addressed. cost analysis The 2-F conceptually a simple architecture offering maximum potential few testing concerns. However, its link life cycle costs exceed that star. offer savings cable, splicing, long-term maintenance. has however, could impose limitations on type transceivers other components being deployed, this result higher system costs. >