Optical Single Sideband Modulator Without Second-Order Sidebands
An optical single sideband modulator without generating both the −2nd- and +2nd-order sidebands is presented. It is based on a parallel operation of two dual-drive Mach–Zehnder modulators (DDMZMs) where one is operated as a conventional single sideband (SSB) modulato...
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8358709/ |
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| author | Erwin Hoi Wing Chan Chongjia Huang Chirappanath B. Albert |
| author_facet | Erwin Hoi Wing Chan Chongjia Huang Chirappanath B. Albert |
| author_sort | Erwin Hoi Wing Chan |
| collection | DOAJ |
| description | An optical single sideband modulator without generating both the −2nd- and +2nd-order sidebands is presented. It is based on a parallel operation of two dual-drive Mach–Zehnder modulators (DDMZMs) where one is operated as a conventional single sideband (SSB) modulator and the other is operated as a single-drive Mach–Zehnder modulator (MZM) biased at the maximum transmission point. The 2nd-order sidebands generated by the SSB modulator and the maximum-biased MZM can be cancelled by controlling the sideband amplitude and phase. Canceling the 2nd-order sidebands eliminates the second-order harmonic component presented at the output of a long-reach fiber optic link. The new SSB modulator can be implemented using standard off-the-shelf components and has a wide bandwidth. Experimental results show >20 dB 2nd-order sidebands suppression for different modulation indexes and 22.6 dB reduction in the fiber optic link output second-order harmonic component, compared to using a conventional SSB modulator formed by a DDMZM and a 90° hybrid coupler. Results also demonstrate that the performance of the new SSB modulator is insensitive to the optical carrier frequency and the input RF signal frequency. |
| format | Article |
| id | doaj-art-b8b9bf0e75874b35b696caa6138096a3 |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-b8b9bf0e75874b35b696caa6138096a32025-08-20T03:16:04ZengIEEEIEEE Photonics Journal1943-06552018-01-0110311010.1109/JPHOT.2018.28358108358709Optical Single Sideband Modulator Without Second-Order SidebandsErwin Hoi Wing Chan0https://orcid.org/0000-0003-0885-4572Chongjia Huang1Chirappanath B. Albert2School of Engineering and Information Technology, Charles Darwin University, Darwin, NT, AustraliaSchool of Engineering and Information Technology, Charles Darwin University, Darwin, NT, AustraliaSchool of Engineering and Information Technology, Charles Darwin University, Darwin, NT, AustraliaAn optical single sideband modulator without generating both the −2nd- and +2nd-order sidebands is presented. It is based on a parallel operation of two dual-drive Mach–Zehnder modulators (DDMZMs) where one is operated as a conventional single sideband (SSB) modulator and the other is operated as a single-drive Mach–Zehnder modulator (MZM) biased at the maximum transmission point. The 2nd-order sidebands generated by the SSB modulator and the maximum-biased MZM can be cancelled by controlling the sideband amplitude and phase. Canceling the 2nd-order sidebands eliminates the second-order harmonic component presented at the output of a long-reach fiber optic link. The new SSB modulator can be implemented using standard off-the-shelf components and has a wide bandwidth. Experimental results show >20 dB 2nd-order sidebands suppression for different modulation indexes and 22.6 dB reduction in the fiber optic link output second-order harmonic component, compared to using a conventional SSB modulator formed by a DDMZM and a 90° hybrid coupler. Results also demonstrate that the performance of the new SSB modulator is insensitive to the optical carrier frequency and the input RF signal frequency.https://ieeexplore.ieee.org/document/8358709/Fiber optics links and subsystemsoptical communicationsradio frequency photonicsmodulators. |
| spellingShingle | Erwin Hoi Wing Chan Chongjia Huang Chirappanath B. Albert Optical Single Sideband Modulator Without Second-Order Sidebands IEEE Photonics Journal Fiber optics links and subsystems optical communications radio frequency photonics modulators. |
| title | Optical Single Sideband Modulator Without Second-Order Sidebands |
| title_full | Optical Single Sideband Modulator Without Second-Order Sidebands |
| title_fullStr | Optical Single Sideband Modulator Without Second-Order Sidebands |
| title_full_unstemmed | Optical Single Sideband Modulator Without Second-Order Sidebands |
| title_short | Optical Single Sideband Modulator Without Second-Order Sidebands |
| title_sort | optical single sideband modulator without second order sidebands |
| topic | Fiber optics links and subsystems optical communications radio frequency photonics modulators. |
| url | https://ieeexplore.ieee.org/document/8358709/ |
| work_keys_str_mv | AT erwinhoiwingchan opticalsinglesidebandmodulatorwithoutsecondordersidebands AT chongjiahuang opticalsinglesidebandmodulatorwithoutsecondordersidebands AT chirappanathbalbert opticalsinglesidebandmodulatorwithoutsecondordersidebands |