Optical fibre Mach-Zehnder Microphone

Krüger, Léonard M.; Theron, H.J.

doi:10.1109/imoc.2007.4404287

Cited by 3 publications

(5 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dynamic range measured from these spectra is better than 50 dB with a noise level around −80 dB up to 12.5 kHz. In view of the results obtained, in addition to the low cost and simplicity of the conguration, this system becomes competitive compared to more costly and complex systems, which use DFB lasers, acousto-optical modulators and ber optic directional coupler [6], ber bundle [7], and interferometer mounting [10].…”

Section: Acousto-optic Spectrometermentioning

confidence: 99%

From Acoustic Waves to Microwaves

Pacheco

Sakamoto²,

Kitano

2015

Acta Phys. Pol. A

View full text Add to dashboard Cite

We present here some results of our research related to the optoelectronics and photonics and show all the experimental setups used. Starting with a discussion on the importance of the waves, we demonstrate our achievements based on employment of acoustic, optical, and microwaves and their technological use. The results concern the acousto-optic and electro-optic eects. The generalized analysis of the electro-optic eect reveals a new high induced birefringence in lithium niobate. A patented optical ber microphone is presented, and its applications to the measurements of acoustic wave velocity in gases and in the laser ultrasound non-destructive evaluation system are discussed. Finally, the generation of microwaves by an optical method with substantial cost reduction is presented.

show abstract

Section: Acousto-optic Spectrometermentioning

confidence: 99%

From Acoustic Waves to Microwaves

Pacheco

Sakamoto²,

Kitano

2015

Acta Phys. Pol. A

View full text Add to dashboard Cite

show abstract

“…At present there is a growing interest in designing fiber optic microphones using different principles [1][2][3][4][5][6][7][8][9][10]. This is attributed to their advantages over the conventional capacitive ones; for example their immunity to electromagnetic interference, lower sensitivity to vibrations, lighter weight and higher directionality [6].…”

Section: Introductionmentioning

confidence: 99%

“…This is attributed to their advantages over the conventional capacitive ones; for example their immunity to electromagnetic interference, lower sensitivity to vibrations, lighter weight and higher directionality [6]. Of particular interest here is the optical-fiber Mach-Zehnder microphone [9,10]. The operation of the optical-fiber Mach-Zehnder microphone can be described as follows.…”

Section: Introductionmentioning

confidence: 99%

Harmonic and intermodulation performance of optical-fiber Mach–Zehnder microphone

Abuelma’atti¹

2011

Applied Acoustics

View full text Add to dashboard Cite

“…The authors of papers [9,10,11,12] examine the issue of interferometric sensors operating as an acoustic sensors. The paper [11] outlines the use of the interferometer as a microphone but with tapers.…”

mentioning

confidence: 99%

“…The paper [11] outlines the use of the interferometer as a microphone but with tapers. While the authors of articles [10,12] measured acoustic signals using optical fibers.…”

mentioning

confidence: 99%

The arms arrangement influence on the sensitivity of Mach–Zehnder fiber optic interferometer

Kepák

Čubík

Doricak

et al. 2013

Optical Sensors 2013

View full text Add to dashboard Cite

Fiber-optic sensors based on phase shift measurements are one of the most sensitive sensors at all. In general they are capable to measure various phenomena, for example displacement, rotation, temperature, acoustic pressure, liquid flow and level, strain etc. In our paper we have used interferometer configuration based on the Mach-Zehnder principle with polarization maintaining components and narrowband DFB laser operating at a wavelength of 1550 nm. In this configuration it is important to isolate the reference arm against measured phenomena and on the other hand to increase the sensitivity of the measuring arm to maximize phase shift induced by the measured phenomenon. The paper describes various measurement arrangements of measuring and reference arm and their influence on the measurement sensitivity. The obtained frequency ranges are evaluated for all mentioned combinations.

show abstract

Optical fibre Mach-Zehnder Microphone

Cited by 3 publications

References 9 publications

From Acoustic Waves to Microwaves

From Acoustic Waves to Microwaves

Harmonic and intermodulation performance of optical-fiber Mach–Zehnder microphone

The arms arrangement influence on the sensitivity of Mach–Zehnder fiber optic interferometer

Contact Info

Product

Resources

About