Abstract

An optical true-time delay device that uses a binary counting system in a modified White cell is demonstrated. The switching engine uses four spherical mirrors and a three-state digital micromirror array. The delay part, as designed, provides 6 bits of delay ranging from 78 ps to 5 ns, using a combination of dielectric blocks for short delays and lens trains for longer ones. Long lens trains are folded for compactness. The authors describe the design and demonstrate two of the 6 bits of delays experimentally. Delays were accurate to within the measurement resolution of 1.25 ps. The insertion loss varied from 3.1-5.2 dB, depending on delay. It was found that the micromirrors do not contribute significantly to the loss.

© 2006 IEEE

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  1. B. L. Anderson and C. D. Liddle, "Optical true-time delay for phased array antennas: Demonstration of a quadratic White cell," Appl. Opt., vol. 41, no. 23, pp. 4912-4921, Aug. 2002.
  2. B. L. Anderson and R. Mital, "Polynomial-based optical true-time delay devices using MEMs," Appl. Opt., vol. 41, no. 26, pp. 5449-5461, Sep. 2002.
  3. S. A. Collins Jr. and B. L. Anderson, "Device and Method for Producing Optically-Controlled Incremental Time Delays," May 14, 2002.
  4. A. Rader and B. L. Anderson, "Demonstration of a linear optical true-time delay device using a microelectromechanical mirror array," Appl. Opt., vol. 42, no. 8, pp. 1409-1416, Mar. 2003.
  5. S. Kunathikom, B. L. Anderson and S. A. Collins Jr., "Design of delay elements in binary optical true-time delay device using a White cell," Appl. Opt., vol. 42, no. 35, pp. 6984-6994, Dec. 2003.
  6. R. Higgins, N. K. Nahar and B. L. Anderson, "Design and demonstration of a switching engine for a binary true-time delay device using a White cell," Appl. Opt., vol. 42, no. 23, pp. 4657-4747, Aug. 2003.
  7. J. White, "Long optical paths of large aperture," J. Opt. Soc. Amer., vol. 32, no. 5, pp. 285-288, May 1942.
  8. B. L. Anderson, V. Argueta-Diaz, F. Abou-Galala, G. Radhakrishnan and R. Higgins, "Optical cross-connect switch based on tip/tilt micromirrors in a White cell," IEEE J. Sel. Topics Quantum Electron., vol. 9, no. 2, pp. 579-593, Mar./Apr. 2003.

Other (8)

B. L. Anderson and C. D. Liddle, "Optical true-time delay for phased array antennas: Demonstration of a quadratic White cell," Appl. Opt., vol. 41, no. 23, pp. 4912-4921, Aug. 2002.

B. L. Anderson and R. Mital, "Polynomial-based optical true-time delay devices using MEMs," Appl. Opt., vol. 41, no. 26, pp. 5449-5461, Sep. 2002.

S. A. Collins Jr. and B. L. Anderson, "Device and Method for Producing Optically-Controlled Incremental Time Delays," May 14, 2002.

A. Rader and B. L. Anderson, "Demonstration of a linear optical true-time delay device using a microelectromechanical mirror array," Appl. Opt., vol. 42, no. 8, pp. 1409-1416, Mar. 2003.

S. Kunathikom, B. L. Anderson and S. A. Collins Jr., "Design of delay elements in binary optical true-time delay device using a White cell," Appl. Opt., vol. 42, no. 35, pp. 6984-6994, Dec. 2003.

R. Higgins, N. K. Nahar and B. L. Anderson, "Design and demonstration of a switching engine for a binary true-time delay device using a White cell," Appl. Opt., vol. 42, no. 23, pp. 4657-4747, Aug. 2003.

J. White, "Long optical paths of large aperture," J. Opt. Soc. Amer., vol. 32, no. 5, pp. 285-288, May 1942.

B. L. Anderson, V. Argueta-Diaz, F. Abou-Galala, G. Radhakrishnan and R. Higgins, "Optical cross-connect switch based on tip/tilt micromirrors in a White cell," IEEE J. Sel. Topics Quantum Electron., vol. 9, no. 2, pp. 579-593, Mar./Apr. 2003.

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