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

Focusing subwavelength grating coupler for mid-infrared suspended membrane germanium waveguides

Not Accessible

Your library or personal account may give you access

Abstract

We present a focusing subwavelength grating (SWG) for efficient coupling of mid-infrared (mid-IR) light into suspended membrane Ge photonic integrated circuits (PICs) that enable mid-IR applications in the entire fingerprint region. By virtue of their wide spectral transparency window and air-cladding device configuration, the suspended membrane Ge PICs are expected to be effective for mid-IR applications over the spectral region covering from 2 to 15 μm. Specifically, we demonstrate the maximum coupling efficiency of 11dB with a 1-dB bandwidth of 58nm at the SWG’s center wavelength of 2.37 μm. Our focusing SWG is expected to advance the development of on-chip long-wavelength mid-IR applications such as biochemical sensing, thermal imaging, and nonlinear optics in the fingerprint region.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Focusing subwavelength grating coupler for mid-infrared suspended membrane waveguide

Zhenzhou Cheng, Xia Chen, C. Y. Wong, Ke Xu, Christy K. Y. Fung, Y. M. Chen, and Hon Ki Tsang
Opt. Lett. 37(7) 1217-1219 (2012)

Broadband focusing grating couplers for suspended-membrane waveguides

Zhenzhou Cheng, Xia Chen, Chi Yan Wong, Ke Xu, and Hon Ki Tsang
Opt. Lett. 37(24) 5181-5183 (2012)

Ultra-thin mid-infrared silicon grating coupler

Rongxiang Guo, Haoran Gao, Tiegen Liu, and Zhenzhou Cheng
Opt. Lett. 47(5) 1226-1229 (2022)

References

You do not have subscription access to this journal. Citation lists with outbound citation 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

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 (5)

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 (4)

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

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved