Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Flat-top steep-edge photodetector with cascaded grating structure

Not Accessible

Your library or personal account may give you access

Abstract

A new type of photodetector with cascaded waveguide grating filters as a bottom reflection mirror is proposed. A greatly improved spectral response is shown to follow by the integration of a waveguide grating into classical thin-film homogeneous layers. Calculation results for a single grating, a cascaded-double grating, and a cascaded-triple grating structure are demonstrated. An increasing rectangular spectral response is obtained by cascading two or three grating filters. Compared with a traditional photodetector with distributed Bragg reflectors, this new type of photodetector with the same materials requires significantly fewer layers while maintaining narrow flattop response, high peak efficiency, and low sideband reflectance.

© 2009 Optical Society of America

Full Article  |  PDF Article
More Like This
Hybrid integrated photodetector with flat-top steep-edge spectral response

Xinye Fan, Yongqing Huang, Xiaomin Ren, Xiaofeng Duan, Fuquan Hu, Qi Wang, Shiwei Cai, and Xia Zhang
Appl. Opt. 51(24) 5767-5772 (2012)

Theory and experiments of a three-cavity wavelength-selective photodetector

Kai Liu, Yongqing Huang, and Xiaomin Ren
Appl. Opt. 39(24) 4263-4269 (2000)

Si-based tunable flattop photodetector with a stepped Fabry–Perot cavity

Wei Wang, Yongqing Huang, Xiaofeng Duan, Jia Tian, Jingwei Guo, and Xiaomin Ren
Appl. Opt. 51(10) 1487-1494 (2012)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved