Electrooptic matched filter controlled by independent voltages applied to multiple sets of electrodes /
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[College Station, Tex.] :
[Texas A&M University],
[2006]
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| Subjects: | |
| Online Access: | Link to OAK Trust copy |
| Abstract: | Analysis and experimental results on a polarization independent electrooptic matched filter (EMF) with a center wavelength of 1.53 um are reported. The EMF utilizes electrooptic phase-matched TE[unknown character] TM conversion in a Ti-diffused waveguide on a LiNbO₃ substrate. The operation of the EMF to select an optical frequency channel is controlled by applying independent voltages to interdigital electrode sets cascaded along a single mode waveguide. The device is inherently polarization independent and has the potential for submicrosecond tuning. The number of selectable channels N isrelated to the number of electrode sets P by the formula N= P/2 + 1. A matrix analysis is used to determine the TE[unknown character]TM conversion efficiency for the case that P = 8 and N = 5. A driving circuit for the EMF was implemented using a digital-to-analog converter (DAC) array controlled from a personal computer (PC). Transmittance spectra of a filter produced in a LiNbO₃ substrate are presented. A raised cosine weighting function applied along the 3.8 cm length of an EMF provides a sidelobe suppression level better than -17 dB with a 1.0 nm 3-dB bandwidth. |
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| Item Description: | "Major Subject: Electrical Engineering" Title from author supplied metadata (automated record created on Apr. 14, 2006.) Vita. Abstract. Electronic resource. |
| Format: | Mode of access: World Wide Web. System requirements: World Wide Web access and Adobe Acrobat Reader. |
| Bibliography: | Includes bibliographical references. |