Dr. Qian Qian Song Profile

Dr. Qian Qian Song

at Univ of Electronic Science and Technology of China

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 18 April 2021 Presentation + Paper

Three-dimensional tunable true time delay line

Qian Qian Song, Kai Xin Chen

Proceedings Volume 11775, 117750K (2021) https://doi.org/10.1117/12.2592397

Read Abstract +

We propose a novel three-dimensional (3-D) continuously tunable delay line based on high performance 3-D tunable directional couplers (DCs) driven by graphene heaters. The device includes a continuously tunable delay line section and 2 bit discretely tunable delay line section, the former can be considered as 1 bit discretely tunable delay line structure, the latter includes two delay units and three switch units. We set the maximum delay tuning range of the continuously tunable delay line section equal to incremental delay step ∆t of discretely tunable delay line section, so that the tuning is continuous over the entire delay range. The use of the graphene electrode by placing in direct contact with the upper waveguide core combined with the air slots formed on both sides of the graphene electrode can improve the heating efficiency. The proposed delay line has an optimal dimension of 25 mm × 6.8 mm (length × width). The simulation results show crosstalks are less than -21.6 dB over the whole C-band and less than ~-45.2 dB (OFF state) at 1550 nm. The delay line is capable of operation for continuously tuning and the delay time is linearly dependent on K. And the continuously tuning delay range is from 0 to 200 ps over minimum 3 dB bandwidth of <10 GHz. The minimum 3 dB bandwidth of our proposed device is four times larger than that of a continuously tunable delay line constructed with a typical 2×2 asymmetric MZI.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years