Quasi-phase-matched electro-optic modulators for high-speed signal processing

James E. Toney; Vincent E. Stenger; James Busch; Peter Pontius; Michael Clabough; Andrea Pollick; Sri Sriram

doi:10.1117/12.2005369

5 February 2013 Quasi-phase-matched electro-optic modulators for high-speed signal processing

James E. Toney, Vincent E. Stenger, James Busch, Peter Pontius, Michael Clabough, Andrea Pollick, Sri Sriram

Proceedings Volume 8647, Next-Generation Optical Communication: Components, Sub-Systems, and Systems II; 86470H (2013) https://doi.org/10.1117/12.2005369
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

This paper reports on the design, fabrication and testing of quasi-phase-matched (QPM) lithium niobate electro-optic modulators optimized for the 40-60 GHz frequency range. The device used a single-drive, coplanar-waveguide (cpw) electrode structure that provided a good balance between impedance and RF loss, and a DC Vπ.L product of approximately 10 V.cm. Ferroelectric domain engineering enabled push-pull operation with a single drive, while achieving low chirp. A custom developed pulsed poling process was used to fabricate periodic domain QPM structures in lithium niobate. QPM periods were in the range of 3 mm to 4.5 mm, depending on the design frequency. The pulse method enabled precise domain definition with a minimum of overpoling. Low-loss diffused optical waveguides were fabricated by an annealed proton exchange (APE) process. By operating in both co-propagating and counter-propagating modes, the QPM devices can be used to implement dual band RF bandpass filters simultaneously covering both 10-20 GHz and 40-60 GHz frequency bands. Arrays of QPM device structures demonstrated in this work form the basis for a reconfigurable RF photonic filter. The RF photonic QPM technology enables efficient concurrent antenna remoting and filtering functionality. Applications of the technology include fiber radio for cellular access and finite impulse response filters for wideband electronic warfare receivers.

Citation Download Citation

James E. Toney, Vincent E. Stenger, James Busch, Peter Pontius, Michael Clabough, Andrea Pollick, and Sri Sriram "Quasi-phase-matched electro-optic modulators for high-speed signal processing", Proc. SPIE 8647, Next-Generation Optical Communication: Components, Sub-Systems, and Systems II, 86470H (5 February 2013); https://doi.org/10.1117/12.2005369

ACCESS THE FULL ARTICLE

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: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Electrodes

Waveguides

Lithium niobate

Modulators

Electrooptic modulators

Finite element methods

RF photonics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years