Optical waveguide array are attractive for high-speed, wide-angle optical beam steering or deflection, but optical waveguide arrays radiate undesirable sidelobes. It is shown that suppression of sidelobes can be accomplished by configuring array elements in nonuniform pattern. Tow kinds of arrangement of linear changed spaced optical waveguide array are discussed. Sidelobes can be suppressed deeply. Especially, the light path area ratio can be improved
to 71.9% by using symmetrical structure array. Steering characteristic shown that the maximum steering degree of 240(-3dB) can be obtained by nonuniform spaced optical waveguide array.
Based on the programmable phase modulation technique with a multi-channel optical wave-guide array, a novel method used for collimated laser precision scanning was presented. Optical system and control circuit have been designed for the multi-channel optical wave-guide array. Theoretical analysis and experimental result shows that the
method can be used for small angle adjusting and big angle scanning of collimated laser in free space light communication.
A novel rapid laser electro-optical scanning system is studied. Theoretical and experimental analysis shows the feasible ofthe system. Based on the theory of optical phased array, the operating characteristic of the electro-optical waveguide array scanner, the core part of the rapid laser electro-optical scanning system, are specifically investigated. According to the theoretically result of the design parameters of the electro-optical waveguide array scanner, a 4 waveguides array is fabricated by use of AlGaAs crystal through MOCVD. By using of a designed device, steering of laser beam is realized. Experimental results of the A1GaAs-based optical scanner conformed the performance of the scanning system, such as rapid scanning (0~10MHz) and wide scan zone (30 Deg).
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.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
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.