Title :
Intersubband all-optical switching in submicron high-mesa SCH waveguide structure with wide-gap II-VI-based quantum wells
Author :
Akita, K. ; Akimoto, R. ; Hasama, T. ; Ishikawa, H. ; Takanashi, Y.
Author_Institution :
Ultrafast Photonic Devices Lab., Nat. Inst. of Adv. Ind. Sci. & Technol., Ibaraki
Abstract :
An all-optical switch using intersubband transition in wide-gap II-VI-based quantum wells in an improved waveguide structure is presented. The waveguide exhibits a separate confinement heterostructure (SCH) and submicron high-mesa waveguide for stronger optical confinement. A reduction of 39% is achieved in control pulse energy for a 10 dB switching extinction ratio while maintaining a subpicosecond response
Keywords :
II-VI semiconductors; high-speed optical techniques; optical switches; optical waveguides; quantum well devices; wide band gap semiconductors; SCH waveguide structure; all-optical switching; intersubband transition; optical confinement; separate confinement heterostructure; submicron high-mesa waveguide; wide-gap II-VI-based quantum wells;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20062732
