Title :
Interdigitated contact semiconductor laser as optoelectronic ´AND´ gate
Author :
Chua, S.J. ; Lim, S.H. ; Kanhere, R. ; Tua, G.F.
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
Semiconductor lasers with interdigitated contacts have been successfully fabricated that are capable of achieving new functionalities. By differential current pumping, two sets of light-current characteristics can be formed with threshold current linearly dependent on the length ratio of unpumped to pumped regions. The device can function as an optoelectronic AND gate.
Keywords :
integrated optoelectronics; optical logic; semiconductor junction lasers; CrAu-Si 3N 4; GaAs-GaAlAs; differential current pumping; interdigitated contacts; light-current characteristics; optoelectronic AND gate; semiconductor laser; threshold current;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911217
