Midinfrared Compatible Tunable Bandpass Filter Based on Multimode Interference in Chalcogenide Fiber

Zhang, Kaixuan; Alamgir, Imtiaz; Rochette, Martin

doi:10.1109/jlt.2019.2948109

Cited by 19 publications

(7 citation statements)

References 30 publications

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“…The introduced filter exhibits simple and reliable tuning mechanism with accepted tunability and BW. The tuning range is wider than in (Yu et al, 2020), (L. and (Li et al, 2019).The tuning by mechanical bending and stretching in (Zhang et al 2020), (Yu et al, 2020) , and (Li et al, 2019) is unreliable in long term operation. changing the level of the liquid in (X. Ma…”

Section: Tunable Cascade Filter By Magnetic Field Effectmentioning

confidence: 94%

“…The structure is widely used as senor (Tian et al, 2018, AL-Janaby and AL-Dergazly, 2020, fiber filter (Zhang et al 2020, Álvarez-Tamayo et al, 2016, Chakravarty et al, 2017, recently, it is used as filter in CW optical parametric oscillation (OPO) cavity (Yu et al, 2020, Tang et al, 2019 since the nonlinear effect require low loss filter. The filter is used to tune Er (Khattak et al 2018, Yuxin et al, 2018, Walbaum and Fallnich, 2011 , Yb (Zhang et al, 2012, Sánchez et al 2006, Selvas et al 2005, and Tm (X.…”

Section: Introductionmentioning

confidence: 99%

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Tunable optical fiber cascade filter by magneto-optical effect

Younus

Al-Dergazly

Abass

2021

Preprint

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Optical filters based on cascade single mode - multimode - single mode fiber structure (SMS) has considerable attention as a reliable optical device the reliability is due to its simplicity, compactness, low cost, all fiber device, low transmission loss, and can be continuously tune the laser wavelength at a specific spectral range. The principle of the operation is based on self- image and multimode interference (MMI) phenomena. A tunable filter was simulated based on cascade single mode-no core-single mode (SNS) fiber structure surrounded by magneto-optical fluid (MOF) using finite element method (FEM), the influence of the no core fiber (NCF) diameter and length on the tunablility and the bandwidth is investigated and optimized. Two materials were adopted as a MOF. The results show that the tunability of the filter can be improved by decreasing the NCF diameter. A continuous wavelength tunability about 37 nm from 1518 to 1555 nm with a bandwidth about 10 nm is obtained. The device is highly stable, inexpensive, provide wide tuning range compared with other tuning methods. This device can be used in optical communication, fiber sensor, spectroscopy, and in fiber laser technology. To the best of our knowledge, this is the first optical fiber MMI tunable filter by magnetic field effect.

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Section: Tunable Cascade Filter By Magnetic Field Effectmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Tunable optical fiber cascade filter by magneto-optical effect

Younus

Al-Dergazly

Abass

2021

Preprint

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“…The spectrum shows high transmission at wavelengths where the modes of the MMF interfere most constructively at the SMF input. The transmission spectrum can be adjusted with a local maximum to match a target wavelength, by adjustment of the lateral offset between SMF and MMF or by a controlled bending of the MMF [18]. The average coupling loss of the MMI-SA is ~70%, attributed to offset coupling of SMF and MMF.…”

Section: Modelocked Tm-doped Fiber Laser Using Multimode Interference...mentioning

confidence: 99%

Modelocked Tm-doped Fiber Laser Using Multimode Interference Saturable Absorber in Reflection Mode

Rochette¹,

Anjum²

2022

Preprint

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We present a reflection mode saturable absorber based on nonlinear multimode interference in a graded index multimode fiber. The saturable absorber provides a modulation depth of 12% at a low saturation intensity of 18.5 MW/cm<sup>2</sup>. The all-fiber structure and reflection mode design of this saturable absorber makes it an ideal device for the fabrication of fiber lasers with linear resonant cavity. When inserted in a linear laser cavity comprising a thulium doped fiber as the gain medium, the saturable absorber triggers modelocked noise like pulses with a center wavelength of 1905 nm and spectral width of 11.2 nm.

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“…8(k)) [161][162], SMS misaligned with output SMF (Fig. 8(l)) [163][164][165][166], S-shaped core-offset connection [167][168] and the use of an air gap between the SMS and SMF [169].…”

Section: E Combinations Of Sms Fiber Structuresmentioning

confidence: 99%

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

Liu

et al. 2021

IEEE Sensors J.

114

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A singlemode-multimode-singlemode (SMS) fiber structure consists of a short section of multimode fiber fusionspliced between two SMS fibers. The mechanism underpinning the operation of an SMS fiber structure is multimode interference and associated self-imaging. SMS structures can be used in a variety of optical fiber systems but are most commonly used as sensors for a variety of parameters, ranging from macro-world measurands such as temperature, strain, vibration, flow rate, RI and humidity to the micro-world with measurands such as proteins, pathogens, DNA, and specific molecules. While traditional SMS structures employ a short section of standard multimode fiber, a large number of structures have been investigated and demonstrated over the last decade involving the replacement of the multimode fiber section with alternatives such as a hollow core fiber or a tapered fiber. The objective of replacing the multimode fiber has most often been to allow sensing of different measurands or to improve sensitivity. In this paper, several different categories of SMS fiber structures, including traditional SMS, modified SMS and tapered SMS fiber structures are discussed with some theoretical underpinning and reviews of a wide variety of sensing examples and recent advances. The paper then summarizes and compares the performances of a variety of sensors which have been published under a number of headings. The paper concludes by considering the challenges faced by SMS based sensing schemes in terms of their deployment in real world applications and discusses possible future developments of SMS fiber sensors.

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Midinfrared Compatible Tunable Bandpass Filter Based on Multimode Interference in Chalcogenide Fiber

Cited by 19 publications

References 30 publications

Tunable optical fiber cascade filter by magneto-optical effect

Tunable optical fiber cascade filter by magneto-optical effect

Modelocked Tm-doped Fiber Laser Using Multimode Interference Saturable Absorber in Reflection Mode

Singlemode-Multimode-Singlemode Fiber Structures for Sensing Applications—A Review

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