scholarly journals Opto-Electronic Oscillators for Micro- and Millimeter Wave Signal Generation

Electronics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 857
Author(s):  
Mehmet Alp Ilgaz ◽  
Bostjan Batagelj
Keyword(s):  
Phase Noise ◽  
Millimeter Wave ◽  
Delay Line ◽  
Access Network ◽  
Local Oscillator ◽  
Signal Generation ◽  
High Frequency Signal ◽  
Wave Signal ◽  
Noise Characteristics ◽  
Low Phase Noise

High-frequency signal oscillators are devices needed for a variety of scientific disciplines. One of their fundamental requirements is low phase noise in the micro- and millimeter wave ranges. The opto-electronic oscillator (OEO) is a good candidate for this, as it is capable of generating a signal with very low phase noise in the micro- and millimeter wave ranges. The OEO consists of an optical resonator with electrical feedback components. The optical components form a delay line, which has the advantage that the phase noise is independent of the oscillator’s frequency. Furthermore, by using a long delay line, the phase noise characteristics of the oscillator are improved. This makes it possible to widen the range of possible OEO applications. In this paper we have reviewed the state of the art for OEOs and micro- and millimeter wave signal generation as well as new developments for OEOs and the use of OEOs in a variety of applications. In addition, a possible implementation of a centralized OEO signal distribution as a local oscillator for a 5G radio access network (RAN) is demonstrated.

Low phase noise millimetre-wave signal generation using a passively modelocked monolithic DBR laser injection locked by an optical DSBSC signal

1995 ◽  
Vol 31 (15) ◽  
pp. 1254-1255 ◽  
Author(s):  
Z. Ahmed ◽  
Y. Ogawa ◽  
M. Pelusi ◽  
D. Novak ◽  
D.Y. Kim ◽  
...  
Keyword(s):  
Phase Noise ◽  
Signal Generation ◽  
Millimetre Wave ◽  
Wave Signal ◽  
Low Phase Noise

Low-Phase-Noise Millimeter-Wave Signal Generator assisted with Frequency Comb based on Electro-Optics-Modulators

CLEO: 2015 ◽  
2015 ◽  
Author(s):  
A. Ishizawa ◽  
T. Nishikawa ◽  
T. Goto ◽  
K. Hitachi ◽  
T. Sogawa ◽  
...  
Keyword(s):  
Phase Noise ◽  
Millimeter Wave ◽  
Frequency Comb ◽  
Signal Generator ◽  
Wave Signal ◽  
Low Phase Noise

scholarly journals Optimizing noise characteristics of mode-locked Yb-doped fiber laser using gain-induced RIN-transfer dynamics

2021 ◽  
Vol 9 ◽  
Author(s):  
Jiangshuoxue Han ◽  
Yang Liu ◽  
Zejiang Deng ◽  
Gehui Xie ◽  
Daping Luo ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Phase Noise ◽  
Transfer Functions ◽  
Dopant Concentration ◽  
Corner Frequency ◽  
Dispersion Management ◽  
Noise Characteristics ◽  
Laser Design ◽  
Parameter Dependent ◽  
Low Phase Noise

Abstract Gain-parameter-dependent transfer functions and phase-noise performances in a mode-locked Yb-doped fiber laser are measured in this study. It is discovered that the corner frequency in the amplitude and phase domains is determined by the absorption coefficient of the gain fiber, when the total absorption and other cavity parameters are fixed. This shows that an oscillator using gain fiber with higher dopant concentration accumulates more phase noise. Furthermore, we present net cavity dispersion-dependent transfer functions to verify the effect of dispersion management on the frequency response. We derive a guideline for optimizing mode-locked fiber laser design to achieve low phase noise and timing jitter.

Ultra-Low phase noise measurement of microwave sources using carrier suppression enabled by a photonic delay line

2021 ◽  
pp. 1-1
Author(s):  
Xichen Wang ◽  
X Steve Yao ◽  
Peng Hao ◽  
Ting Feng ◽  
Xinwei Chen ◽  
...  
Keyword(s):  
Phase Noise ◽  
Delay Line ◽  
Noise Measurement ◽  
Microwave Sources ◽  
Low Phase Noise
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