Tuneable Microwave Photonic Filter Incorporating Wavelength Spacing Programmable, Arrayed Micro-Mirror Based Optical Filter

2006 ◽  
Author(s):  
Ju Han Lee ◽  
You Min Chang ◽  
Young-Geun Han ◽  
Haeyang Chung ◽  
Sang Bae Lee
Keyword(s):  
Optical Filter ◽  
Wavelength Spacing ◽  
Microwave Photonic

A microwave photonic notch filter based on semiconductor optical amplifier and optical filter

2009 ◽  
Author(s):  
Enming Xu ◽  
Xinliang Zhang ◽  
Xiang Li ◽  
Lina Zhou ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Optical Filter ◽  
Notch Filter ◽  
Optical Amplifier ◽  
Microwave Photonic

scholarly journals Ripple Suppression in Broadband Microwave Photonic Phase Shifter Frequency Response

2018 ◽  
Vol 8 (12) ◽  
pp. 2433 ◽  
Author(s):  
Weicheng Xia ◽  
Ruiqi Zheng ◽  
Bijuan Chen ◽  
Erwin Chan ◽  
Xudong Wang ◽  
...  
Keyword(s):  
Frequency Response ◽  
Phase Shifter ◽  
Dynamic Range ◽  
Optical Filter ◽  
Signal Amplitude ◽  
Wide Frequency Range ◽  
Amplitude Variation ◽  
Microwave Photonic ◽  
Phase Deviation ◽  
Hybrid Coupler

This paper presents a detailed investigation on the cause of ripples in the frequency response of a microwave photonic phase shifter implemented using a 90° hybrid coupler. It was found that an unwanted radio frequency (RF) modulation sideband is generated at the modulator output due to the 90° hybrid coupler amplitude and phase imbalance. This resulted in phase shifter output RF signal amplitude variation and phase deviation. Experimental results demonstrated that incorporating an optical filter in the phase shifter structure can reduce the amplitude variation and phase deviation from 4.2 dB to 2.2 dB and from ±12° to ±3.8°, respectively, over a wide frequency range. A comparison of the loss and the dynamic range of the microwave photonic phase shifter implemented using a 90° hybrid coupler with a conventional fiber optic link is also presented.

scholarly journals Demonstration of a Duplex Microwave Photonic Filter and Its Reconfigurability in a Frequency Range of 0–10 GHz

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2159
Author(s):  
Leidy Johana Quintero-Rodríguez ◽  
José Roberto Warnes-Lora ◽  
Min Won Lee ◽  
Jorge Rodríguez-Asomoza ◽  
Ignacio Enrique Zaldívar-Huerta
Keyword(s):  
Signal To Noise Ratio ◽  
Chromatic Dispersion ◽  
Optical Filter ◽  
Single Mode ◽  
Digital Data ◽  
Frequency Range ◽  
Optical Source ◽  
Multimode Laser ◽  
Microwave Photonic ◽  
Birefringent Optical Fiber

In this paper, we have demonstrated a duplex microwave photonic filter system. The reconfigurability of a microwave passband filter by using a birefringent optical filter has also been demonstrated experimentally. The effect of filtering normally depends on the intermodal separation of a multimode laser diode (MLD), as well as the chromatic dispersion parameter and the length of a Single Mode-Standard Fiber (SM-SF). However, in this work, the intermodal separation of the MLD is altered by an optical filter which consists of a section of birefringent optical fiber (BOF) placed between crossed polarizers. Using this filter, six passbands in the frequency range of 0–10 GHz are obtained. Our duplex Microwave Photonic Filter (MPF) system is driven by only a single optical source. Performance evaluation for the filtered passband is also given in terms of the Signal-to-Noise-Ratio (SNR). On average, an SNR of 13.87 dB is obtained for all the passbands generated by our duplex Microwave Photonic Filter (MPF) system. For potential applications, the generated passbands may be used as radio frequency (RF) carriers to transmit analog or digital data in an optical communications system.

Reconfigurable microwave photonic filter based on polarization modulation and an optical filter

2018 ◽  
Vol 57 (02) ◽  
pp. 1
Author(s):  
Man Ying Li ◽  
Ling Wang ◽  
Cheng Wu Yang ◽  
Ming Li ◽  
Ning Hua Zhu ◽  
...  
Keyword(s):  
Optical Filter ◽  
Polarization Modulation ◽  
Microwave Photonic
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