Microwave signal processing using photonic techniques
Microwave signal processing using photonic technologies is a technique to process microwave or radio frequency (RF) signals with the help of photonic devices or subsystems. Processing of RF signals conveyed by an optical carrier directly in the optical domain offers great flexibility in selecting th...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
2012
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/48018 |
| _version_ | 1811684113647665152 |
|---|---|
| author | Zhou, Junqiang |
| author2 | Sheel Aditya |
| author_facet | Sheel Aditya Zhou, Junqiang |
| author_sort | Zhou, Junqiang |
| collection | NTU |
| description | Microwave signal processing using photonic technologies is a technique to process microwave or radio frequency (RF) signals with the help of photonic devices or subsystems. Processing of RF signals conveyed by an optical carrier directly in the optical domain offers great flexibility in selecting the radio frequency of operation, RF bandwidth, and the filter response. This technique can overcome the limitations of conventional electrical signal processors such as limited bandwidth and electromagnetic interference. It also has the advantages of high rate-distance product, low loss, and tunable and adaptive functions. The major parts of the thesis are devoted to the development of the microwave signal processing techniques such as microwave photonic filter (MPF) and microwave signal instantaneous frequency measurement (IFM) using photonic techniques. In order to realize microwave photonic filter (MPF), various schemes of division, delay and summing of a modulated optical signal have been proposed in the literature. The coherent summing of optical signals is sensitive to polarization fluctuation caused by environmental perturbation. Therefore the incoherent approach is more attractive in practice for stable operation. To satisfy the requirement of incoherent summing, either the laser coherence time is needed to be shorter than the optical delay time, or the state of polarization (SOP) of the optical signals after division needs to be orthogonal. Tunability is an important feature of microwave photonic filters. Based on the working principles of microwave photonic filters, tunability can be realized through changing the number of taps, tap weights, and time delay between taps. |
| first_indexed | 2024-10-01T04:23:28Z |
| format | Thesis |
| id | ntu-10356/48018 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:23:28Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | ntu-10356/480182023-07-04T17:08:35Z Microwave signal processing using photonic techniques Zhou, Junqiang Sheel Aditya Shum Ping School of Electrical and Electronic Engineering Network Technology Research Centre DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Microwave signal processing using photonic technologies is a technique to process microwave or radio frequency (RF) signals with the help of photonic devices or subsystems. Processing of RF signals conveyed by an optical carrier directly in the optical domain offers great flexibility in selecting the radio frequency of operation, RF bandwidth, and the filter response. This technique can overcome the limitations of conventional electrical signal processors such as limited bandwidth and electromagnetic interference. It also has the advantages of high rate-distance product, low loss, and tunable and adaptive functions. The major parts of the thesis are devoted to the development of the microwave signal processing techniques such as microwave photonic filter (MPF) and microwave signal instantaneous frequency measurement (IFM) using photonic techniques. In order to realize microwave photonic filter (MPF), various schemes of division, delay and summing of a modulated optical signal have been proposed in the literature. The coherent summing of optical signals is sensitive to polarization fluctuation caused by environmental perturbation. Therefore the incoherent approach is more attractive in practice for stable operation. To satisfy the requirement of incoherent summing, either the laser coherence time is needed to be shorter than the optical delay time, or the state of polarization (SOP) of the optical signals after division needs to be orthogonal. Tunability is an important feature of microwave photonic filters. Based on the working principles of microwave photonic filters, tunability can be realized through changing the number of taps, tap weights, and time delay between taps. DOCTOR OF PHILOSOPHY (EEE) 2012-02-14T01:21:08Z 2012-02-14T01:21:08Z 2011 2011 Thesis Zhou, J. (2011). Microwave signal processing using photonic techniques. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/48018 10.32657/10356/48018 en 140 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Zhou, Junqiang Microwave signal processing using photonic techniques |
| title | Microwave signal processing using photonic techniques |
| title_full | Microwave signal processing using photonic techniques |
| title_fullStr | Microwave signal processing using photonic techniques |
| title_full_unstemmed | Microwave signal processing using photonic techniques |
| title_short | Microwave signal processing using photonic techniques |
| title_sort | microwave signal processing using photonic techniques |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics |
| url | https://hdl.handle.net/10356/48018 |
| work_keys_str_mv | AT zhoujunqiang microwavesignalprocessingusingphotonictechniques |