Stoichiometric lithium niobate for ultra-high performance optical waveguide devices

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: HQ00603C0122
Agency Tracking Number: 031-0614
Amount: $69,997.00
Phase: Phase I
Program: SBIR
Awards Year: 2003
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 S. Sriram
 (614) 799-0664
Business Contact
 Judith Sriram
Title: VP & Business Manager
Phone: (614) 799-0664
Research Institution
For a couple of decades, congruent lithium niobate (CLN) has been the choice electro-optic material for integrated optic modulators and switches. Despite the development of new substrates, such as electro-optic polymers and compound semiconductors,lithium niobate is still the preferred material for producing the highest performance commercial optical modulator and switch products. Today, stoichiometric lithium niobate (SLN) promises to further enhance the performance of these devices. Desirablecharacteristics such as sub-1 Volt switching voltage and bandwidth capability in excess of 100 GHz will be easier to achieve with SLN. This proposal addresses the production of highly stoichiometric lithium niobate wafers and the characterization of itsimportant material and optical properties. In addition, SLN wafers will be poled and optical waveguides produced in the poled samples. The optical properties of these waveguides will be characterized. Stoichiometric lithium niobate (SLN) is superior tocongruent lithium niobate (CLN) in all aspects of its material characteristics. In particular, SLN offers increased electro-optic coefficients, higher optical power handling capability and lower defects than CLN. It is predicted that the photonicsindustry will eventually replace CLN by SLN, in order to produce optical modulators with lower switching voltages and enhanced bandwidth.

* Information listed above is at the time of submission. *

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