A Single Longitudinal Mode Fiber Ring Laser Based on Cascaded Microfiber Knots Filter

Li, Yue; Sun, Qizhen; Xu, Zhilin; Luo, Yiyang; Liu, Deming

doi:10.1109/lpt.2016.2586098

Cited by 15 publications

(6 citation statements)

References 21 publications

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“…Similarly, the light oscillates counterclockwise in MKR 2 and is partially output from port 13 through coupling region IV. According to the resonance principle, the signal light can exist stably in the ring only when its frequency matches the two MKRs, while the other signal light is suppressed in output range, and the phase matching condition of CMKR can be expressed as: [86]…”

Section: Combined With Vernier Effectmentioning

confidence: 99%

\begin{equation}\frac{{{R_1}}}{{{R_2}}} = \frac{{m\; + {\mathrm{\;}}\frac{1}{2}}}{{m\; + {\mathrm{\;}}N\; + {\mathrm{\;}}\frac{1}{2}}};m = 0,1,2, \ldots \end{equation}

where R 1 and R 2 are the radiuses of MKR 1 and MKR 2 , respectively. In particular, when N = 1 every m ‐th resonance peak of MKR 1 will overlap with every ( m + 1)‐th resonance peak of MKR 2 , so that a periodic cursor envelope can be formed.…”

Section: Mkr and Its Improved Structurementioning

confidence: 99%

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Microfiber Knot Resonators: Structure, Spectral Properties, and Sensing Applications

Zhang,

Gao,

Xia

et al. 2023

Laser & Photonics Reviews

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In recent years, compact micro‐/nanofiber sensors with fast response and high resolution have become a hot field in sensing and nanotechnology. In addition to the unique properties of microfibers such as strong evanescent field, low optical loss, and easy integration, microfiber knot resonators further improve the sensing capability due to their resonance properties. The potential high‐quality factor allows higher sensing sensitivity and resolution, which is very attractive for optical sensing at the micro‐/nano scale. More application potential can be effectively stimulated by improving the structure shape or principle or combining with functional sensitive materials. This paper first introduces the preparation process and spectral characteristics of conventional microfiber knots and then focuses on three new types of devices for enhancing the sensing performance, namely material‐coated, shape‐improved, and principle‐extended, and briefly analyzes their spectral properties. In addition, the research progress and applications of these sensors are summarized. Finally, the existing problems in this field are analyzed, and the directions for further development are discussed and prospected.

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Section: Combined With Vernier Effectmentioning

confidence: 99%

\begin{equation}\frac{{{R_1}}}{{{R_2}}} = \frac{{m\; + {\mathrm{\;}}\frac{1}{2}}}{{m\; + {\mathrm{\;}}N\; + {\mathrm{\;}}\frac{1}{2}}};m = 0,1,2, \ldots \end{equation}

Section: Mkr and Its Improved Structurementioning

confidence: 99%

Microfiber Knot Resonators: Structure, Spectral Properties, and Sensing Applications

Zhang,

Gao,

Xia

et al. 2023

Laser & Photonics Reviews

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“…Besides, cascaded interferometers can significantly enhance the spectral shift range through the Vernier effect. The use of cascaded interferometers as filters for interval-adjustable FRLs has been proposed in recent years [32][33][34]. However, to the best of our knowledge, FRL sensor operated under the principle of Vernier effect has not been widely proposed.…”

Section: Introductionmentioning

confidence: 99%

Temperature Sensor Based on Fiber Ring Laser With Cascaded Fiber Optic Sagnac Interferometers

et al. 2021

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A new temperature fiber ring laser (FRL) sensor based on a cascaded Sagnac loops fiber structure is proposed and experimentally demonstrated. The optical FRL sensor consists of cascaded Sagnac loops by inserting two polarization-maintaining optical fibers (PMF) with slightly different lengths. PMF with length of 56 cm and 75 cm are used in Sagnac loops as a filter and sensing unit in laser cavity. The working principle of the sensor is based on the phase shift (θ) caused by birefringence between two principal polarization modes and enhance the sensitivity by constructing a Vernier-scale. In an appropriate temperature range (25℃-31℃), the detection sensitivity of FRL sensor based on a cascaded Sagnac structure is significantly higher than other FRL sensors. Thanks to the laser sensing system, the sensitivity can be modulated by changing the free spectral range (FSR). The experimental results show that the temperature sensitivity of the cascade Sagnac structure sensor is-4.031 nm / ° C, which is five times higher than that of FRL sensor base on the single Sagnac structure.

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“…Single longitudinal mode (SLM) fiber lasers are highly desired due to the significant potential for use in various applications, ranging from optical sensing and wavelength division multiplexing (WDM) communications systems to interferometry, data storage, spectroscopy, and coherent signal generation. The attractiveness of SLM fiber lasers is in their output, which has very narrow linewidth and a high output power, thus making them particularly useful for applications requiring dense wavelength transmissions over long distances [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…SLM fiber lasers typically employ etalon-like devices in the laser cavity as a part of their design, as well as various filters, such as cascaded microfiber knots filters (CMKFs) and tunable Fabry-Perot (FP) filters; as well as saturable absorbers (SAs), such as graphene [1][2][3][4][5][6][7][8][9][10]. These approaches are all able to generate the desired SLM outputs, but each technique has various advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Single longitudinal mode laser generation using coupled microfiber Mach–Zehnder interferometer filter

et al. 2018

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View the article online for updates and enhancements. Related content Single-longitudinal-mode operation in tunable novel zirconia-yttria-alumina-erbium-doped fiber laser H Ahmad, K Thambiratnam, M C Paul et al.-Switchable and tunable dual-wavelength single-longitudinal-mode erbium-doped fiber laser with special subring-cavity and superimposed fiber Bragg gratings Ting Feng, Fengping Yan, Shuo Liu et al.-Stable single longitudinal mode erbiumdoped silica fiber laser based on an asymmetric linear three-cavity structure Feng Ting, Yan Feng-Ping, Li Qi et al.

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A Single Longitudinal Mode Fiber Ring Laser Based on Cascaded Microfiber Knots Filter

Cited by 15 publications

References 21 publications

Microfiber Knot Resonators: Structure, Spectral Properties, and Sensing Applications

Microfiber Knot Resonators: Structure, Spectral Properties, and Sensing Applications

Temperature Sensor Based on Fiber Ring Laser With Cascaded Fiber Optic Sagnac Interferometers

Single longitudinal mode laser generation using coupled microfiber Mach–Zehnder interferometer filter

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