Tolerance analysis of aligning an astigmatic laser diode with a single-mode optical fiber
Resource
Journal of Lightwave Technology 14 (12): 2757-2762
Journal
Journal of Lightwave Technology
Journal Volume
14
Journal Issue
12
Pages
2757-2762
Date Issued
1996
Date
1996
Author(s)
Su, C.D.
Abstract
A 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.
Subjects
Misalignment tolerance analysis; Optical coupling
Other Subjects
Calculations; Lenses; Optical fiber coupling; Optical systems; Optics; Semiconductor lasers; Astigmatic laser diode; Light coupling; Misalignment tolerance analysis; Optical fibers
Type
journal article
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