High-NA planar microlens for LD array
- 13 January 1993
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- Vol. 1751, 246-255
- https://doi.org/10.1117/12.138887
Abstract
The paper describes a new high NA planar microlens witha swelled structure (S- PML) designed for a laser diode (LD) array. The center to center spacing of the S-PML is 250 micrometers which is adjusted to the most ordinary LD array to be used in optical fiber communication system. The diameter of the S-PM is 85 micrometers and the focal length is 110 micrometers . The NA of the S-PML is 0.37. We evaluate the coupling loss between an LD and a single mode fiber using the S- PML. The coupling losses were 6.2 dB for 1.3 micrometers LD and 7.6 dB for 1.55 micrometers LD, respectively.Keywords
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