Coherent light generators – Particular active media – Semiconductor
Patent
1996-12-09
1999-03-23
Davie, James W.
Coherent light generators
Particular active media
Semiconductor
372 46, H01S 319
Patent
active
058870121
ABSTRACT:
A semiconductor laser array according to the invention is so constructed that plural LDs are driven by the same modulating signal, and series connection of the plural LDs becomes possible. Accordingly, efficiency of modulation of the aforementioned semiconductor laser array is largely improved. After a n-InP clad layer 6, an active layer 7 and a p-InP layer 8 are successively grown on a semi-insulating substrate 5, the n-InP clad layer 6 is etched and a stripe shaped mesa is formed. Then, a p-InP current blocking layer 9 and a n-InP current blocking layer 10 are grown on the etched portion. After fabricating a p+-InP cap layer 11 thereon, the surface of the n-InP clad layer 6 is exposed by selective etching. Moreover, a channel 12 for isolating the adjacent LDs, reaching the semi-insulating layer 5, is formed by penetrating the n-InP clad layer 6. Each of the LDs is provided with a p-side electrode 13 and a n-side electrode 14 thereon, and a p-side electrode 13 of any LD is connected to the n-side electrode of an adjacent LD by a bonding wire 3.
REFERENCES:
patent: 4977570 (1990-12-01), Hasegawa
patent: 5179567 (1993-01-01), Uomi et al.
patent: 5513200 (1996-04-01), Paoli
Oishi et al, "The 19th European Conference on Optical Communication," 1993, Switzerland, pp. 21-24 (No month).
Davie James W.
NEC Corporation
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