Tunable multimode-interference bandpass fiber filter

Antonio-López, Jose Enrique; Castillo-Guzman, A.; May-Arrioja, Daniel A.; Selvas-Aguilar, R.; LiKamWa, Patrick

doi:10.1364/ol.35.000324

Cited by 182 publications

(81 citation statements)

References 11 publications

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“…From (6), the transmission of dips (A), (B), and (D) and peak (C) is related to the excitation coefficient , the evanescent absorption coefficient , and the mode phase . For peak (C), it is a self-image point and the ideal transmission is 100% if the evanescent absorption coefficient is zero.…”

Section: Experiments and Resultsmentioning

confidence: 99%

“…The multimode interference (MMI) in the single-mode-multimode-single-mode (SMS) structure is sensitive to external parameters, such as the refractive index, temperature, and axial strain. Various optical fiber devices using the SMS fiber structure have been proposed and demonstrated, such as temperature sensors [1], refractometers [2][3][4], bandpass filters [5,6], wavelength tunable fiber laser [7], and chemical gas detector [8]. For the excellent SMS structure, all the above optical fiber devices have advantages such as the low cost, ease of fabrication, and compatibility with standard optical fiber devices.…”

Section: Introductionmentioning

confidence: 99%

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A Highly Sensitive Intensity-Modulated Optical Fiber Magnetic Field Sensor Based on the Magnetic Fluid and Multimode Interference

et al. 2017

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Fiber-optic magnetic field sensing is an important method of magnetic field monitoring, which is essential for the safety of civil infrastructures, especially for power plant. We theoretically and experimentally demonstrated an optical fiber magnetic field sensor based on a single-mode-multimode-single-mode (SMS) structure immersed into the magnetic fluid (MF). The length of multimode section fiber is determined based on the self-image effect through the simulation. Due to variation characteristics of the refractive index and absorption coefficient of MF under different magnetic fields, an effective method to improve the sensitivity of SMS fiber structure is realized based on the intensity modulation method. This sensor shows a high sensitivity up to 0.097 dB/Oe and a high modulation depth up to 78% in a relatively linear range, for the no-core fiber (NCF) with the diameter of 125 m and length of 59.8 mm as the multimode section. This optical fiber sensor possesses advantages of low cost, ease of fabrication, high sensitivity, simple structure, and compact size, with great potential applications in measuring the magnetic field.

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Section: Experiments and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Highly Sensitive Intensity-Modulated Optical Fiber Magnetic Field Sensor Based on the Magnetic Fluid and Multimode Interference

et al. 2017

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“…The interference of these excited modes produces selfimages at periodic intervals along the NCF. The central wavelength of the SMS filter can be expressed as [4]:…”

Section: Methodsmentioning

confidence: 99%

“…The SMS filter exhibits a narrow transmission spectral width with a leading wavelength peak. Moreover, its transmission wavelength peak can be tuned by external parameters such as temperature, strain and liquid refractive index [3,4]. This features make the SMS fibre structure attractive for fibre-optical sensing [5][6][7] and tuneable fibre laser applications [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

MMI filters configuration for dual-wavelength generation in a ring cavity erbium-doped fibre laser

Álvarez-Tamayo

Aguilar-Soto

Durán-Sánchez

et al. 2016

J. Eur. Opt. Soc.-Rapid Publ.

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Background: Dual wavelength laser generation has been of constant interest due to their applications in optical communications and teraheartz generation. A novel configuration for Dual-wavelength laser generation based on the use of a couple of multimode interference (MMI) filters is demonstrated in a ring cavity Erbium-doped fibre laser. Methods: The MMI filters consist of a segment of no-core fibre spliced between two SMF-28 single mode fibre segments. The MMI filters configured as a Mach-Zehnder interferometer, are used as transmission spectral filters for simultaneous generation of two laser wavelengths. An optical attenuator is used to adjust the intra-cavity losses for dual-wavelength laser generation. Results: Laser emission at 1540.4 and 1554 nm for a wavelength separation of~13.6 nm is obtained. The laser wavelengths output power stability variations with the applied pump power is also experimentally discussed. Conclusions: The use of MMI filters in the proposed dual-wavelength laser filter is experimentally demonstrated as a reliable device for dual-wavelength generation in fibre lasers.

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“…Recently, we have demonstrated the advantages of fiber based MMI devices for different laser applications [6]. The advantages of MMI devices are that they exhibit a pass-band filter response, and they only require splicing a multimode fiber (MMF) between two single mode fibers (SMF).…”

Section: Introductionmentioning

confidence: 99%

Novel multimode interference liquid level sensors

et al. 2010

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A novel all-fiber Multimode Interference (MMI) liquid level sensor is proposed and demonstrated. We show that MMI effects can be effectively applied for multiplexed liquid level sensing, and by selecting an adequate fiber, discrete and continuous level sensing is feasible. Using a standard 105/125 multimode fiber a simple discrete level sensor was fabricated, which can also can also discriminate the refractive index of the liquid. When a specialty fiber, know as NoCore fiber is used, both continuous and discrete level sensing can be achieved. We can also modify at will the continuous level range by increasing the No-core fiber by the appropriate length, while retaining the ability to determine the refractive index of the liquid during the level measurement. The MMI liquid level sensors are not only inexpensive, but their fabrication is quite simple.

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Tunable multimode-interference bandpass fiber filter

Cited by 182 publications

References 11 publications

A Highly Sensitive Intensity-Modulated Optical Fiber Magnetic Field Sensor Based on the Magnetic Fluid and Multimode Interference

A Highly Sensitive Intensity-Modulated Optical Fiber Magnetic Field Sensor Based on the Magnetic Fluid and Multimode Interference

MMI filters configuration for dual-wavelength generation in a ring cavity erbium-doped fibre laser

Novel multimode interference liquid level sensors

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