LED array package for optical data links
Abstract
A package with an array of six LEDS is described. The design reduces the cost and the size of electro-optical interfaces for applications in low-bit-rate transmission systems and computer data links. A package containing six GaAs LEDs, electrical connections, and a new fiber ribbon connector was fabricated, mounted, and encapsulated; each LED in the array, with 80 mA dc applied, can couple an average optical power of 5 microW into a graded-index fiber having 0.22 N.A. and 55-micron core diameter. Cross-modulation between adjacent LED signals is smaller than -50 dB. Fiber ribbon connectors fabricated with matching plates which align the fibers with the light output from the LEDs showed insertion losses as low as 0.4 dB.
- Publication:
-
AT T Technical Journal
- Pub Date:
- March 1979
- Bibcode:
- 1979ATTTJ..58..713A
- Keywords:
-
- Cost Reduction;
- Data Links;
- Fiber Optics;
- Gallium Arsenides;
- Light Emitting Diodes;
- Optical Coupling;
- Computer Networks;
- Electro-Optics;
- Encapsulated Microcircuits;
- Fabrication;
- Gradient Index Optics;
- Light Sources;
- Ribbons;
- Electronics and Electrical Engineering