SBIR-STTR Award

Nanosecond Opto-electrical Switches
Award last edited on: 1/6/2006

Sponsored Program
SBIR
Awarding Agency
DOD : Navy
Total Award Amount
$550,329
Award Phase
2
Solicitation Topic Code
N96-091
Principal Investigator
Anantha S Narayanan

Company Information

Ramar Corporation

71 Lyman Street
Northborough, MA 01532
   (508) 393-4225
   N/A
   N/A
Location: Single
Congr. District: 02
County: Worcester

Phase I

Contract Number: N00164-96-C-0058
Start Date: 6/3/1996    Completed: 12/3/1996
Phase I year
1996
Phase I Amount
$67,092
Rapid development in optical communications, signal processing and time delay beam steering for radar applications has produced considerable interest in fast and efficient electro-optic switches and modulators. In this phase I program initially a comprehensive survey of the state of the art technology in electrically controlled switches will be done and several design options which satisfies the technical objectives like good insertion loss, low drive voltage, high speed and low cross talk will be selected. RAMAR proposes a novel electro-optic switch based on two metalcodiffusion technology. This design provides good insertion loss, low drive voltage, high speed and requires simple electrode structures to achieve switching speed in GHz regime.

Phase II

Contract Number: N00164-98-C-0058
Start Date: 8/17/1998    Completed: 8/17/2000
Phase II year
1998
Phase II Amount
$483,237
Rapid development in optical communications, signal processing and time delay beam steering for radar applications has produced considerable interest in fast and efficient electro-optic switches and modulators. Through our extensive Phase I experiments we discovered that there is a change in cross-talk value in the presence of electrode. We believe that, the best way to solve this problem is to tune the couplers with the electrode. In Phase II we will fabricate devices with proton exchange. The diffusion temperatures needed for proton exchange process is very low and the couplers can be tuned to achieve better cross-talk with the electrode. Fabricating devices with proton exchange, not only will improve the cross-talk better than 30dB, but also it is an ideal process for implementing our novel polarization independent design. We like to point out that our novel switch design is not only polarization independent but also has a low switching voltage for any state of input polarization. To the best of our knowledge this is the first simple novel design with polarization independence and low switching voltage for any state of input polarization.

Benefits:
Have applications in Optical computing, anolog and digital fiber communication, data links and in fiber gyroscopes.

Keywords:
Electro-optic Lithium niobate High speed Switching volage Photon exchange Cross-talk Insertioon loss Switches