Optics: measuring and testing – By light interference
Reexamination Certificate
2005-10-18
2005-10-18
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By light interference
Reexamination Certificate
active
06956652
ABSTRACT:
An optical autocorrelator comprises an optical waveguide (40) of semiconductor material which exhibits two photon absorption at a wavelength at which the autocorrelator is intended to operate. Reflecting means (46) are provided at a part of the waveguide which is remote to an end (42) in which an optical pulse (44) is input for reflecting the optical pulse such as to generate counter-propagating optical pulses in the waveguide. A plurality of electrodes (481-48N) are disposed along the waveguide for measuring a two photon absorption photocurrent (i1-in) generated in the waveguide by the counter-propagating optical pulses.
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F.R. Laughton et al., “Two Photon Absorption Semiconductor Waveguide Autocorrelator”, IEEE Journalof Quantum Electronics, IEEE Inc. New York, vol. 30, No. 3 Mar. 1, 1994, pages 838,845 ISSN: 0018-09197.
Carter Andrew Cannon
Whitbread Neil David
Bookham Technology plc
Connolly Patrick
Lahive & Cockfield LLP
Laurentano, Esq. Anthony A.
Toatley , Jr. Gregory J.
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