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Photonic Filtering for Applications in Microwave Generation and Metrology
- Date Issued:
- 2014
- Abstract/Description:
- This work uses the photonic filtering properties of Fabry-Perot etalons to show improvements in the electrical signals created upon photodetection of the optical signal. First, a method of delay measurement is described which uses multi-heterodyne detection to find correlations in white light signals at 20 km of delay to sub millimeter resolution. By filtering incoming white light with a Fabry-Perot etalon, the pseudo periodic signal is suitable for measurement by combining and photodetecting it with an optical frequency comb. In this way, optical data from a large bandwidth can be downconverted and sampled on low frequency electronics. Second, a high finesse etalon is used as a photonic filter inside an optoelectronic oscillator (OEO). The etalon's narrow filter function allows the OEO loop length to be extremely long for a high oscillator quality factor while still suppressing unwanted modes below the noise floor. The periodic nature of the etalon allows it to be used to generate a wide range of microwave and millimeter wave tones without degradation of the RF signal.
Title: | Photonic Filtering for Applications in Microwave Generation and Metrology. |
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Name(s): |
Bagnell, Marcus, Author Delfyett, Peter, Committee Chair Schoenfeld, Winston, Committee Member Li, Guifang, Committee Member Peale, Robert, Committee Member University of Central Florida, Degree Grantor |
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Type of Resource: | text | |
Date Issued: | 2014 | |
Publisher: | University of Central Florida | |
Language(s): | English | |
Abstract/Description: | This work uses the photonic filtering properties of Fabry-Perot etalons to show improvements in the electrical signals created upon photodetection of the optical signal. First, a method of delay measurement is described which uses multi-heterodyne detection to find correlations in white light signals at 20 km of delay to sub millimeter resolution. By filtering incoming white light with a Fabry-Perot etalon, the pseudo periodic signal is suitable for measurement by combining and photodetecting it with an optical frequency comb. In this way, optical data from a large bandwidth can be downconverted and sampled on low frequency electronics. Second, a high finesse etalon is used as a photonic filter inside an optoelectronic oscillator (OEO). The etalon's narrow filter function allows the OEO loop length to be extremely long for a high oscillator quality factor while still suppressing unwanted modes below the noise floor. The periodic nature of the etalon allows it to be used to generate a wide range of microwave and millimeter wave tones without degradation of the RF signal. | |
Identifier: | CFE0005457 (IID), ucf:50396 (fedora) | |
Note(s): |
2014-12-01 Ph.D. Optics and Photonics, Optics and Photonics Doctoral This record was generated from author submitted information. |
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Subject(s): | microwave oscillators -- multi-heterodyne detection -- millimeter-wave generation | |
Persistent Link to This Record: | http://purl.flvc.org/ucf/fd/CFE0005457 | |
Restrictions on Access: | public 2014-12-15 | |
Host Institution: | UCF |