High-responsivity 100GHz waveguide UTC photodetector

T. Umezawa; K. Akahane; A. Matsumoto; A. Kanno; N. Yamamoto; T. Kawanishi

doi:10.1117/12.2250246

28 January 2017 High-responsivity 100GHz waveguide UTC photodetector

T. Umezawa, K. Akahane, A. Matsumoto, A. Kanno, N. Yamamoto, T. Kawanishi

Author Affiliations +

Proceedings Volume 10128, Broadband Access Communication Technologies XI; 1012807 (2017) https://doi.org/10.1117/12.2250246
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

We present a double cladding, high-mesa-type waveguide UTC photodetector with an improved the responsivity. In this device structure, an InGaAs thin core layer was sandwiched by p-InP/InGaAsP and n-InP/InGaAsP cladding layers, including a UTC structure, in order to obtain a good optical coupling between the waveguide and the fiber. By comparing the resulting mode field with that obtained with a single cladding layer structure, we confirmed that the vertical mode field was enlarged. Without a spot size converter, the measured responsivity was as high as 0.6 A/W at 1550 nm, which suggests a responsivity three times higher than that of back-illuminated structures, and higher responsivity than that of previous reports. A high frequency performance (f_3dB = 100 GHz) was also measured. The device structure, including the layer, doping level conditions, and optical fiber coupling results are discussed, and its performance is characterized in detail.

Conference Presentation

Citation Download Citation

T. Umezawa, K. Akahane, A. Matsumoto, A. Kanno, N. Yamamoto, and T. Kawanishi "High-responsivity 100GHz waveguide UTC photodetector", Proc. SPIE 10128, Broadband Access Communication Technologies XI, 1012807 (28 January 2017); https://doi.org/10.1117/12.2250246

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE