Bandwidth Tunable Filter Based on Ideal Quasi-Critical Coupling State in WGM Cavity

Jiwei Li; Yue Hu; Xufan Gan; Feng Gao; Wending Zhang; Ligang Huang; Fang Bo; Guoquan Zhang; Jingjun Xu

doi:10.1109/JLT.2021.3104397

Bandwidth Tunable Filter Based on Ideal Quasi-Critical Coupling State in WGM Cavity

Jiwei Li, Yue Hu, Xufan Gan, Feng Gao, Wending Zhang, Ligang Huang, Fang Bo, Guoquan Zhang, Jingjun Xu

School of Physical Science and Technology

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

A tunable bandwidth add-drop filter in ideal quasi-critical coupling (QCC) state was analyzed in theory in detail and demonstrated in experiment, with two vector modes HE$^{\rm X}_{11}$ and HE$^{\rm Y}_{11}$ coupled single whispering gallery mode (WGM) as its basic configuration. In the experiment, the bandwidth tuning range at the Drop port was from 54.0 MHz to 775.8 MHz with the conversion efficiency maintained above 95%, and bandwidth tuning range at the Through port was from 6.6 MHz to 720.6 MHz with the insertion loss fluctuation less than 5%. The demonstrated filter gains advantages of stable efficiency, narrow band, and broad bandwidth tuning range, which will be helpful for its application in microwave photonics, narrow linewidth lasers and nonlinear optics.

Original language	English
Pages (from-to)	6547-6552
Number of pages	6
Journal	Journal of Lightwave Technology
Volume	39
Issue number	20
DOIs	https://doi.org/10.1109/JLT.2021.3104397
State	Published - 15 Oct 2021

Keywords

add/drop filter
Mode conversion
tunable bandwidth filter
Whispering gallery mode

Access to Document

10.1109/JLT.2021.3104397

Cite this

@article{b34858737d784595963d861a00b1812b,

title = "Bandwidth Tunable Filter Based on Ideal Quasi-Critical Coupling State in WGM Cavity",

abstract = "A tunable bandwidth add-drop filter in ideal quasi-critical coupling (QCC) state was analyzed in theory in detail and demonstrated in experiment, with two vector modes HE$^{\rm X}_{11}$ and HE$^{\rm Y}_{11}$ coupled single whispering gallery mode (WGM) as its basic configuration. In the experiment, the bandwidth tuning range at the Drop port was from 54.0 MHz to 775.8 MHz with the conversion efficiency maintained above 95%, and bandwidth tuning range at the Through port was from 6.6 MHz to 720.6 MHz with the insertion loss fluctuation less than 5%. The demonstrated filter gains advantages of stable efficiency, narrow band, and broad bandwidth tuning range, which will be helpful for its application in microwave photonics, narrow linewidth lasers and nonlinear optics.",

keywords = "add/drop filter, Mode conversion, tunable bandwidth filter, Whispering gallery mode",

author = "Jiwei Li and Yue Hu and Xufan Gan and Feng Gao and Wending Zhang and Ligang Huang and Fang Bo and Guoquan Zhang and Jingjun Xu",

note = "Publisher Copyright: {\textcopyright} 1983-2012 IEEE.",

year = "2021",

month = oct,

day = "15",

doi = "10.1109/JLT.2021.3104397",

language = "英语",

volume = "39",

pages = "6547--6552",

journal = "Journal of Lightwave Technology",

issn = "0733-8724",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "20",

}

TY - JOUR

T1 - Bandwidth Tunable Filter Based on Ideal Quasi-Critical Coupling State in WGM Cavity

AU - Li, Jiwei

AU - Hu, Yue

AU - Gan, Xufan

AU - Gao, Feng

AU - Zhang, Wending

AU - Huang, Ligang

AU - Bo, Fang

AU - Zhang, Guoquan

AU - Xu, Jingjun

PY - 2021/10/15

Y1 - 2021/10/15

N2 - A tunable bandwidth add-drop filter in ideal quasi-critical coupling (QCC) state was analyzed in theory in detail and demonstrated in experiment, with two vector modes HE$^{\rm X}_{11}$ and HE$^{\rm Y}_{11}$ coupled single whispering gallery mode (WGM) as its basic configuration. In the experiment, the bandwidth tuning range at the Drop port was from 54.0 MHz to 775.8 MHz with the conversion efficiency maintained above 95%, and bandwidth tuning range at the Through port was from 6.6 MHz to 720.6 MHz with the insertion loss fluctuation less than 5%. The demonstrated filter gains advantages of stable efficiency, narrow band, and broad bandwidth tuning range, which will be helpful for its application in microwave photonics, narrow linewidth lasers and nonlinear optics.

AB - A tunable bandwidth add-drop filter in ideal quasi-critical coupling (QCC) state was analyzed in theory in detail and demonstrated in experiment, with two vector modes HE$^{\rm X}_{11}$ and HE$^{\rm Y}_{11}$ coupled single whispering gallery mode (WGM) as its basic configuration. In the experiment, the bandwidth tuning range at the Drop port was from 54.0 MHz to 775.8 MHz with the conversion efficiency maintained above 95%, and bandwidth tuning range at the Through port was from 6.6 MHz to 720.6 MHz with the insertion loss fluctuation less than 5%. The demonstrated filter gains advantages of stable efficiency, narrow band, and broad bandwidth tuning range, which will be helpful for its application in microwave photonics, narrow linewidth lasers and nonlinear optics.

KW - add/drop filter

KW - Mode conversion

KW - tunable bandwidth filter

KW - Whispering gallery mode

UR - http://www.scopus.com/inward/record.url?scp=85117272752&partnerID=8YFLogxK

U2 - 10.1109/JLT.2021.3104397

DO - 10.1109/JLT.2021.3104397

M3 - 文章

AN - SCOPUS:85117272752

SN - 0733-8724

VL - 39

SP - 6547

EP - 6552

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

IS - 20

ER -

Bandwidth Tunable Filter Based on Ideal Quasi-Critical Coupling State in WGM Cavity

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this