LON A. WANGSu, C.D.C.D.Su2009-03-252018-07-062009-03-252018-07-06199607338724http://ntur.lib.ntu.edu.tw//handle/246246/148119https://www.scopus.com/inward/record.uri?eid=2-s2.0-0030381068&doi=10.1109%2f50.545794&partnerID=40&md5=bb8a01d019d4fd5fc3cd9e1103c02d24A general method of analyzing misalignment tolerance of coupling light from an astigmatic laser diode to a single-mode fiber is described. We apply the method to derive the 3 dB tolerances caused by longitudinal, lateral, and angular misalignments in the optimal conditions for two kinds of coupling schemes. One is by the use of a rotationally symmetric optical system, and the other by a rod which is a special case of utilizing a rotationally asymmetric optical system. In the latter coupling case, the misalignment caused by a laser is found to have a much less 3 dB tolerance in the vertical direction than that caused by a fiber.application/pdf577258 bytesapplication/pdfen-USMisalignment tolerance analysis; Optical couplingCalculations; Lenses; Optical fiber coupling; Optical systems; Optics; Semiconductor lasers; Astigmatic laser diode; Light coupling; Misalignment tolerance analysis; Optical fibersjournal article10.1109/50.5457942-s2.0-0030381068WOS:A1996VX66700014http://ntur.lib.ntu.edu.tw/bitstream/246246/148119/1/04.pdf