Integrated Waveguide Optical Isolators

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: W31P4Q-08-C-0263
Agency Tracking Number: 07SB2-0392
Amount: $98,873.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2007
Solicitation Topic Code: SB072-024
Solicitation Number: 2007.2
Small Business Information
5507 N. Paseo ventoso, Tucson, AZ, 85750
DUNS: 601990778
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Robert Norwood
 Optical Engineer
 (520) 626-0936
Business Contact
 James Fountain
Title: Director, Contract Administration
Phone: (520) 250-4405
Research Institution
A waveguide optical isolator is proposed based on ultrahigh Verdet constant s. Prelminary measurements on these materials indicate Verdet constants with magnitudes ranging from that of YIG to that of BIG. Verdet constant measurements and waveguide loss measurements on the magneto-optic polymers will be performed to confirm feasibility for both high isolation (>30 dB) and low loss (<3 dB) operation. Excellent transparency at 1550nm is evident from thin film UV-VIS measurements. Both Faraday rotation and non-reciprocal Mach-Zehnder designs will be explored with both BPM and mode solver software. These designs will take advantage of photopatternable sol-gel cladding technology that allows for low loss coupling to optical fiber (< 0.5 dB per interface), refractive index tuning to eliminate waveguide birefringence, and increased photostability for high power applications. Wafer manufacturing economic analyses will be performed and a waveguide Faraday rotator demo will be prepared to demonstrate feasibility prior to Phase II.

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

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