Fiber-Optic Sensor Interrogation Based on a Widely Tunable Monolithic Laser Diode

Müller, Mathias S.; Hoffmann, Lars; Bodendorfer, Thomas; Hirth, Florian; Petit, François; Plattner, Markus; Buck, Thorbjörn C.; Koch, Alexander W.

doi:10.1109/tim.2009.2025987

Cited by 30 publications

(15 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To overcome this limitation, more than one tunable reflector is employed to make use of the so-called Vernier effect [23]. This way wide tuning ranges ( 4 40 nm) are achieved [8].…”

Section: The Monolithic Tunable Laser Diodementioning

confidence: 99%

See 1 more Smart Citation

Tunable laser thin film interrogation

Hirth¹,

Bodendorfer²,

Plattner³

et al. 2011

Optics and Lasers in Engineering

View full text Add to dashboard Cite

“…To overcome this limitation, more than one tunable reflector is employed to make use of the so-called Vernier effect [23]. This way wide tuning ranges ( 4 40 nm) are achieved [8].…”

Section: The Monolithic Tunable Laser Diodementioning

confidence: 99%

“…Applications of this light source have been described in [8][9][10]. These light sources were developed for optical telecommunications with more than 40 nm wavelength range and have only recently been commercialized.…”

Section: Introductionmentioning

confidence: 99%

Tunable laser thin film interrogation

Hirth¹,

Bodendorfer²,

Plattner³

et al. 2011

Optics and Lasers in Engineering

View full text Add to dashboard Cite

“…In previous works, many demodulation algorithms have been proposed, such as cross-correlation method [4], peak searching method [5,6,7], and modified centroid algorithm [8].…”

Section: Introductionmentioning

confidence: 99%

“…For peak searching method [5,6,7], output wavelength of tunable laser need to be tuned by injection current/temperature to search and match the reflected FBG's center wavelength. In [8], rapid wavelength tuning of laser has to be made through FBG's whole spectrum and modified centroid algorithm is utilized for the demodulation of nonequidistantly sampled FBG sensor signals.…”

Section: Introductionmentioning

confidence: 99%

A novel algorithm based on DFB tunable laser array for demodulation of FBG sensors

Guo

Yao

et al. 2017

IEICE Electron. Express

View full text Add to dashboard Cite

In this paper, a high effective demodulate algorithm based on tunable four-channel DFB (Distributed Feedback) laser array is proposed. In comparison with common algorithms which can work correctly when tunable laser have to be rapidly tuned through FBG's (Fiber Bragg Grating) whole spectrum, the algorithm is unique in that accurate demodulation can be done by scanning only 0.4 nm bandwidth of FBG's reflected spectrum and the scanned spectrum can be any part of the whole FBG spectrum including those regions with relatively low power. Therefore, the laser tuning time and response time of demodulation system is much more reduced which is important for most applications that need dynamic, real-time measurements. Wavelength-division multiplexing for FBG sensing network will be supported by the demodulating system and algorithm. Based on strain experiments of the FBG sensing system, excellent demodulation accuracy were demonstrated by the proposed algorithm.

show abstract

“…Tunable lasers [6], spectral analysis [7], linear filters [8] and interferometers [9] are some examples. Many of these solutions require costly equipment.…”

Section: Introductionmentioning

confidence: 99%

Integrated FBG sensors interrogator in silicon photonic platform using active interferometer monitoring

et al. 2016

View full text Add to dashboard Cite

We experimentally demonstrate the feasibility of Fiber Bragg Grating sensors interrogation using integrated unbalanced Mach-Zehnder Interferometers (MZI) and phase sensitive detection in silicon-on-insulator (SOI) platform. The Phase- Generated Carrier (PGC) demodulation technique is used to detect phase changes, avoiding signal fading. Signal processing allows us to extract the wavelength shift from the signal patterns, allowing accurate dynamic FBG interrogation. High resolution and low cost chips with multiple interrogators and photodetectors on board can be realized by exploiting the advantages of large scale fabrication capabilities of well-established silicon based industrial infrastructures. Simultaneous dynamic reading of a large number of FBG sensors can lead to large volume market applications of the technology in several strategic industrial fields. The performance of the proposed integrated FBG interrogator is validated by comparing with a commercial FBG readout based on a spectrometer and used as a reference

show abstract

Fiber-Optic Sensor Interrogation Based on a Widely Tunable Monolithic Laser Diode

Cited by 30 publications

References 14 publications

Tunable laser thin film interrogation

Tunable laser thin film interrogation

A novel algorithm based on DFB tunable laser array for demodulation of FBG sensors

Integrated FBG sensors interrogator in silicon photonic platform using active interferometer monitoring

Contact Info

Product

Resources

About