Laser coupling to single-mode fibre using graded-index lenses and compact disc 1.3 ?m laser package |
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Authors: | Reith LA Shumate PW Koga Y |
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Institution: | Bell Communications Research, Murray Hill, USA; |
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Abstract: | A 1.3 ?m laser in a compact disc package is coupled to single-mode fibre using two graded-index lenses in a nearly confocal scheme. An increase in the alignment tolerance at the lens-lens interface by a factor of six suggests the design for a potentially very low-cost connectorised laser package. The coupling efficiency of approx. 6% (?12 dB) is shown to be adequate for local loop applications. |
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