By Topic

Monolithic integration of a semiconductor optical amplifier and a high bandwidth p-i-n photodiode using asymmetric twin-waveguide technology

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Fengnian Xia ; Dept. of Electr. Eng., Princeton Univ., NJ, USA ; Jian Wei ; V. Menon ; S. R. Forrest

An optical mode transformer, a semiconductor optical amplifier (SOA), and a high-bandwidth waveguide-coupled photodiode are monolithically integrated using separately optimized materials based on asymmetric twin-waveguide (ATG) technology. Incident light is collected by a diluted, large fiber guide followed by transfer to an SOA. After amplification, light is coupled into the uppermost In/sub 0.53/Ga/sub 0.47/As light absorption layer by two consecutive taper couplers. The device shows a peak responsivity of 11 A/W (/spl sim/12.5-dB SOA-to-detector gain) and a 3-dB electrical bandwidth of 36 GHz, corresponding to a gain-bandwidth product of 640 GHz. In this SOA/p-i-n chip, separation of optical functions (light guiding, amplification, and detection) into different waveguides allows for optimization of materials for each function without material regrowth. Generalized photonic integrated circuits containing complex combinations of these three optical functions can be realized using the integration scheme demonstrated here.

Published in:

IEEE Photonics Technology Letters  (Volume:15 ,  Issue: 3 )