Dual-loop opto-electronic oscillator

Yao, X. Steve; Maleki, Lute; Ji, Yu; Lutes, G.; Tu, Meirong

doi:10.1109/freq.1998.717952

Cited by 40 publications

(33 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, it is an effective way to reduce the phase noise by increasing the loop length. However, the mode spacing is inversely proportional to the loop length [5,6]. As a result, it is hard to find an electrical filter which is narrow enough to obtain single mode oscillation.…”

Section: Introductionmentioning

confidence: 99%

A high side modes suppression dual-loop optoelectronic oscillator with Fabry-Perot etalon

et al. 2013

View full text Add to dashboard Cite

A novel dual-loop technique was proposed for single-mode selection in an optoelectronic oscillator (OEO). It consisted of a pump laser and a feedback circuit including an intensity modulator, a Fabry-Perot (FP) etalon, two optical fiber delay lines, two photodetectors, and an amplifier. By inserting the Fabry-Perot etalon, the proposed dual-loop OEO realized a single mode oscillation ranging from 0 Hz to 20 GHz. The strong oscillation mode was present at 15 GHz, and the side modes suppression ratio (SMSR) exceeded 140 dB. More over the length of the two fiber loops were just 5 meters and 36 meters.

show abstract

Section: Introductionmentioning

confidence: 99%

A high side modes suppression dual-loop optoelectronic oscillator with Fabry-Perot etalon

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Thus, a fiber of length 3 km with a delay time of 10 ms at an f 0 of 10 GHz will have a Q L of the order of 3 × 10 5 . The best result obtained to date is a phase noise of −140 dBc/Hz at a 10 kHz Fourier frequency in a dual loop configuration that uses an external laser with a modulator at the output [29]. At the National Institute of Standards and Technology (NIST), a current modulated laser diode was implemented with a phase noise of −133 dBc/Hz at 10 kHz Fourier frequency [30].…”

Section: Electro-optical Oscillatorsmentioning

confidence: 98%

“…More detailed analysis of the dual-mode oscillator shows that it is not necessary to control the temperature of the SLC resonator in order to achieve the level of oscillator frequency stability given by (29). Several alternatives to controlling the SLC temperature include (i) coupling varactor diodes to the SLC resonator or (ii) inserting an electronically controlled phase shifter into the microwave interferometer of frequency discriminator (see Sec.…”

Section: Amplitude Noise Suppression In Oscillators With Interferometmentioning

confidence: 98%

“…As follows from (29), the frequency stability of a microwave oscillator can be much less than that of its reference source, provided that separation between the two microwave frequencies, |f , and which is operating at approximately 100 MHz, is used in order to bridge the gap between the two microwave frequencies, one expects that the SRAV of the 10 GHz H-mode oscillator will be close to 2.5 × 10 −13 . More detailed analysis of the dual-mode oscillator shows that it is not necessary to control the temperature of the SLC resonator in order to achieve the level of oscillator frequency stability given by (29).…”

Section: Amplitude Noise Suppression In Oscillators With Interferometmentioning

confidence: 99%

“…Current versions of the oscillator are adaptations of a basic loop oscillator that utilizes an optical-fiber delay line as the dispersive element [27,28,29,30]. The range of oscillator operating frequencies is set by the photodetector bandwidth, and with modern high-speed devices this can easily be extended to millimeter waves.…”

Section: Electro-optical Oscillatorsmentioning

confidence: 99%

See 2 more Smart Citations

Low-Noise Microwave Resonator-Oscillators: Current Status and Future Developments

Ivanov

Tobar

Topics in Applied Physics

View full text Add to dashboard Cite

Abstract. This contribution is devoted to principles of operation and design of low noise electromagnetic oscillators. We begin this chapter by introducing the concept of oscillator frequency stability and discussing both time and frequency domain approaches to its characterisation. We review most common experimental techniques used for improving the oscillator frequency stability. A particular attention is paid to applications of microwave circuit interferometry to precision measurements of oscillator frequency fluctuations. Finally, we analyse the future trends in the design of low noise microwave oscillators. This includes (i) interferometric suppression of oscillator power fluctuations and (ii) reduction of the oscillator frequency-temperature dependence by making use of an anisotropy of sapphire dielectric resonators.

show abstract

An opto‐electronic oscillator based on Fabry‐Perot stabilized dual‐wavelength fiber ring laser

Correia

Tovar

Ribeiro

et al. 2021

Micro & Optical Tech Letters

View full text Add to dashboard Cite

The authors experimentally demonstrate an optoelectronic oscillator based on a dual-wavelength fiber ring laser with an inline specially designed fiber-Bragg-grating-based Fabry-Perot filter. An erbiumdoped fiber amplifier initiates the process as a broadband light source while a second optical amplifier provides additional gain to increase the cavity power. By exploiting the two-wavelength beating, a 10.3 GHz microwave carrier with 3-dB linewidth of <200 Hz was generated with 77 dB signal-to-noise ratio. Phase noise of À100 dBc/Hz @10 kHz offset is achieved, which is very appropriate for microwave applications in X-band that often require high extinction ratio and low phase noise.

show abstract

Dual-loop opto-electronic oscillator

Cited by 40 publications

References 5 publications

A high side modes suppression dual-loop optoelectronic oscillator with Fabry-Perot etalon

A high side modes suppression dual-loop optoelectronic oscillator with Fabry-Perot etalon

Low-Noise Microwave Resonator-Oscillators: Current Status and Future Developments

An opto‐electronic oscillator based on Fabry‐Perot stabilized dual‐wavelength fiber ring laser

Contact Info

Product

Resources

About