Long-wavelength laser power converters for optical fibers
Book
·
OSTI ID:304419
- Spire Corp., Bedford, MA (United States)
Measured responsivity and illuminated I-V data are presented for III-V In{sub x}Ga{sup 1{minus}x}As-based photovoltaic cells with bandgaps of 1.42 eV (GaAs), 0.74 (lattice-matched In{sub 0.53}Ga{sub 0.47}As), and 0.55 eV (extended lattice-mismatched In{sub 0.7}Ga{sub 0.3}As) relevant to their application as laser power converters (LPCs) sensitive to infrared light out to a long cutoff wavelength of 2.3 {micro}m. The author presents an analysis that shows the optimum LPC size to use with a Gaussian illumination profile. The author compares some of the tradeoffs of more complex multijunction LPCs with simpler single-junction LPCs used with commercial DC-DC power converter chips. Locations where power transmission over optical fibers would be safer than copper wire are coal mines, grain silos, or corrosive environments.
- OSTI ID:
- 304419
- Report Number(s):
- CONF-970953--
- Country of Publication:
- United States
- Language:
- English
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