A "turnkey" optoelectronic oscillator with low acceleration sensitivity

Huang, Sheng; Tu, Meirong; Yao, Shuting; Maleki, Lute

doi:10.1109/freq.2000.887365

Cited by 13 publications

(5 citation statements)

References 6 publications

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“…While the fiber is under vibration, an estimate of the opposite phase of the φ v (t) signal is generated based on vibration sensors, in this case, a z-axis accelerometer (sensor B) mounted on the top of the spool. The z-axis is the most sensitive axis, by an order of magnitude or more compared to the x and y axes , Huang et al 2000). An electronic phase shifter, as shown in Figure 22, corrects the phase perturbations of the demodulated 10 GHz signal sensed by the accelerometer by feed-forward correction.…”

Section: Acceleration Sensitivity Reductionmentioning

confidence: 99%

“…Its z-axis is aligned with the axis of the spool, and both the x and y axes are in the radial directions. For this test, the z-axis sensitivity is the subject of consideration because the vibration sensitivity of a fiber-on-spool is greatest along this axis Huang et al 2000). The spool is subjected to a random vibration of acceleration PSD equal to 0.5 mg 2 /Hz (rms) along the zaxis, and the PM noise is measured.…”

Section: Optical Componentsmentioning

confidence: 99%

See 1 more Smart Citation

Vibration-Induced PM Noise in Oscillators and Its Suppression

Hati¹,

Nelson²,

Howe³

2009

Aerial Vehicles

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Section: Acceleration Sensitivity Reductionmentioning

confidence: 99%

Section: Optical Componentsmentioning

confidence: 99%

Vibration-Induced PM Noise in Oscillators and Its Suppression

Hati¹,

Nelson²,

Howe³

2009

Aerial Vehicles

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“…The x and y axes are parallel to the plane of the vibration table; due to the rotational symmetry of the cylinder, these axes are equivalent and may be represented as one single radial axis. However, the scope of this paper will focus only on the z axis since it has been shown that vibration sensitivity is greatest along this axis [8,9]. Once the spool is mounted onto the vibration table, a measurement is first taken to observe its noise level while stationary.…”

Section: Methodsmentioning

confidence: 99%

Vibration-induced PM noise measurements of a rigid optical fiber spool

Taylor¹,

Nelson²,

Hati³

et al. 2008

2008 IEEE International Frequency Control Symposium

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The opto-electronic oscillator (OEO) has emerged in recent years as an excellent low-noise source that rivals the best RF oscillators over broad offset frequencies. The main sources of noise in an OEO are the laser and RF modulator, photo detector, loop amplifier, and the long fiber that is needed for high Q. Recent studies have shown that even by using state-ofthe-art components and a low-loss long fiber, the phasemodulated (PM) noise of these OEOs fails to meet the theoretical value at offset frequencies close to carrier, from a few hertz to 1 kHz. The main cause for this shortfall is vibration effects on the optical fiber.External, environmental vibration causes mechanical distortions in the fiber that induce time-delay (phase) fluctuations. The spool onto which the fiber is wound is primarily responsible for imparting these vibration-induced delay fluctuations to the fiber and thus diminishing the performance of the OEO. In this paper, we compare the vibration-induced phase fluctuations of a 3 km optical fiber wound on spools made of four materials-metal, ceramic, plastic, and foam-covered plastic. We investigate fiber-on-spool winding and mounting techniques that reduce vibration susceptibility. We present residual PM measurements that compare the vibration sensitivity of an optical fiber wound on these different materials.

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“…In the field of optoelectronics oscillators (OEOs), such a problem has already been explored. [14][15][16][17][18] The first report on low vibration sensitivity fiber spool was presented by Huang et al [14] who developed an optical fiber spool with an acceleration sensitivity of ∼ 10 −10 /g. Recently, Li et al [19] proposed a new optical fiber spool with asymmetric support structure.…”

Section: Introductionmentioning

confidence: 99%