Title :
Velocity-matched distributed photodetectors with high-saturation power and large bandwidth
Author :
Lin, L.Y. ; Wu, M.C. ; Itoh, T. ; Vang, T.A. ; Muller, R.E. ; Sivco, D.L. ; Cho, A.Y.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
A high-power, high-bandwidth photodetector is experimentally demonstrated using a novel velocity-matched distributed photodetector (VMDP). The distributed photodetector structure can achieve large absorption volume and high-saturation power while maintaining the high-speed performance of the fast photodiodes. The VMDP with 56 mA saturation photocurrent and an instrument-limited 3-dB bandwidth of 49 GHz is achieved. The results show that VMDP is ideal for high-performance microwave fiber-optic links and high-power optical-microwave applications.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; high-speed optical techniques; optical communication equipment; optical saturation; optical waveguides; photodetectors; photodiodes; 49 GHz; 56 mA; AlGaAs; AlGaAs waveguide photodetectors; distributed photodetector structure; fast photodiodes; high-bandwidth photodetector; high-performance microwave fiber-optic links; high-power; high-power optical-microwave applications; high-saturation power; high-speed performance; instrument-limited bandwidth; large absorption volume; large bandwidth; mA saturation photocurrent; velocity-matched distributed photodetector; velocity-matched distributed photodetectors; Bandwidth; Electromagnetic wave absorption; High speed optical techniques; Optical receivers; Optical saturation; Optical waveguides; Photoconductivity; Photodetectors; Photodiodes; Power transmission lines;
Journal_Title :
Photonics Technology Letters, IEEE
