All-optical RF spectrum analyzer with a 5 THz bandwidth based on CMOS-compatible high-index doped silica waveguides

Yuhua Li; Yuhua Li; Zhe Kang; Zhe Kang; Kun Zhu; Shiqi Ai; Xiang Wang; Roy R. Davidson; Yan Wu; Roberto Morandotti; Brent E. Little; David J. Moss; Sai Tak Chu; Sai Tak Chu

doi:10.1364/OL.420716

Optics Letters
Vol. 46,
Issue 7,
pp. 1574-1577
(2021)
•https://doi.org/10.1364/OL.420716

All-optical RF spectrum analyzer with a 5 THz bandwidth based on CMOS-compatible high-index doped silica waveguides

Yuhua Li, Zhe Kang, Kun Zhu, Shiqi Ai, Xiang Wang, Roy R. Davidson, Yan Wu, Roberto Morandotti, Brent E. Little, David J. Moss, and Sai Tak Chu

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
Yuhua Li, Zhe Kang, Kun Zhu, Shiqi Ai, Xiang Wang, Roy R. Davidson, Yan Wu, Roberto Morandotti, Brent E. Little, David J. Moss, and Sai Tak Chu, "All-optical RF spectrum analyzer with a 5 THz bandwidth based on CMOS-compatible high-index doped silica waveguides," Opt. Lett. 46, 1574-1577 (2021)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article

Check for updates

Related Topics
Table of Contents Category
- Nonlinear Optics
Optics & Photonics Topics
?

The topics in this list come from the Optics and Photonics Topics applied to this article.

About this Article
History
- Original Manuscript: February 1, 2021
- Revised Manuscript: February 25, 2021
- Manuscript Accepted: February 27, 2021
- Published: March 19, 2021

Abstract

We report an all-optical radio-frequency (RF) spectrum analyzer with a bandwidth greater than 5 THz, based on a 50 cm long spiral waveguide in a CMOS-compatible high-index doped silica platform. By carefully mapping out the dispersion profile of the waveguides for different thicknesses, we identify the optimal design to achieve near-zero dispersion in the C-band. To demonstrate the capability of the RF spectrum analyzer, we measure the optical output of a femtosecond fiber laser with an ultrafast optical RF spectrum in the terahertz regime.

Full Article | PDF Article

More Like This

CMOS-compatible high-index doped silica waveguide with an embedded silicon-nanocrystal strip for all-optical analog-to-digital conversion

Yuhua Li, Kun Zhu, Zhe Kang, Wai Lok Ho, Roy Davidson, Chao Lu, Brent E. Little, and Sai Tak Chu
Photon. Res. 7(10) 1200-1208 (2019)

CMOS compatible integrated all-optical radio frequency spectrum analyzer

Marcello Ferrera, Christian Reimer, Alessia Pasquazi, Marco Peccianti, Matteo Clerici, Lucia Caspani, Sai T. Chu, Brent E. Little, Roberto Morandotti, and David J. Moss
Opt. Express 22(18) 21488-21498 (2014)

Precise dynamic characterization of microcombs assisted by an RF spectrum analyzer with THz bandwidth and MHz resolution

Ruolan Wang, Liao Chen, Hao Hu, Yanjing Zhao, Chi Zhang, Wenfu Zhang, and Xinliang Zhang
Opt. Express 29(2) 2153-2161 (2021)

Previous Article Next Article

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 (6)

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

Tables (2)

You do not have subscription access to this journal. Article tables 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 (1)

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

Platform	Waveguide Length (cm)	Bandwidth (THz)	Ref.
HNLF	$1 \times 10^{4}$	1.8	[12]
SiN	2	0.9	[10]
${A s}_{2} S_{3}$	16	3.2	[8]
Silicon	1.5	1.6	[6]
High-index doped silica	4	2.5	[11]
High-index doped silica	50	5.0	This Letter

Waveguide Thickness (µm)	Simulated Dispersion at $1547 n m$ ( $p s {n m}^{- 1} {k m}^{- 1}$ )	Dispersion Slope at $1547 n m$ $(p s {n m}^{- 2} {k m}^{- 1})$	Bandwidth (THz)
1.00	–54.9	–0.54	0.59
1.25	–2.6	–0.47	5.00
1.50	36.1	–0.41	0.73

Platform	Waveguide Length (cm)	Bandwidth (THz)	Ref.
HNLF	$1 \times 10^{4}$	1.8	[12]
SiN	2	0.9	[10]
${A s}_{2} S_{3}$	16	3.2	[8]
Silicon	1.5	1.6	[6]
High-index doped silica	4	2.5	[11]
High-index doped silica	50	5.0	This Letter

Waveguide Thickness (µm)	Simulated Dispersion at $1547 n m$ ( $p s {n m}^{- 1} {k m}^{- 1}$ )	Dispersion Slope at $1547 n m$ $(p s {n m}^{- 2} {k m}^{- 1})$	Bandwidth (THz)
1.00	–54.9	–0.54	0.59
1.25	–2.6	–0.47	5.00
1.50	36.1	–0.41	0.73

Abstract

Cited By

Figures (6)

Tables (2)

Equations (1)

Optics Letters