Fast and wide-band tuning single-mode microlaser based on fiber Fabry–Pérot microcavities

Gao, Xin; Cui, Jin-Ming; Hu, Zhihao; Dong, Chun‐Hua; Wang, Jian; Huang, Yun‐Feng; Li, Chuan‐Feng; Guo, Guang‐Can

doi:10.1364/prj.400710

Cited by 3 publications

(3 citation statements)

References 31 publications

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“…Besides, the wavelength of the microcavity laser can be electrically tuned in 10 nm (1.3 THz) range without mode hopping; the fast tuning rate was tested as 1.6 × 10 17 Hz/s. The linewidth of the laser was measured to be 3.1 MHz, corresponding to a coherence length of 66 m. These results were also found in our previous work with a microcavity laser in [34].…”

Section: Sensor Design and Measurementsupporting

confidence: 87%

“…The reflectivity of the fiber mirror and flat mirror reaches 99.94% and 99.8% at 1550 nm and a measured finesse of the bare cavity is 2207. When an Er 3+ /Yb 3+ co-doped silica film with a thickness of 35.1 µm is inserted into the cavity by bonding onto the flat mirror, which acts as the gain medium of the micro-laser, the finesse of the cavity drops to 1035 due to absorption loss of the silica film [34]. The gain peak of the doped film is around 1535 nm with Er 3+ concentration of 1.0 wt% and Yb 3+ concentration of 19.0 wt%.…”

Section: Sensor Design and Measurementmentioning

confidence: 99%

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An Acoustic Sensor Based on Active Fiber Fabry–Pérot Microcavities

Gao

Cui

et al. 2020

Sensors

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We demonstrate an active acoustic sensor based on a high-finesse fiber Fabry–Pérot micro-cavity with a gain medium. The sensor is a compacted device lasing around 1535 nm by external optical pumping. The acoustic pressure acting on the sensor disturbs the emitted laser frequency, which is subsequently transformed to beat signals through a delay-arm interferometer, and directly detected by a photo-detector. In this configuration, the sensing device exhibits a high sensitivity of 2.6 V/Pa and a noise equivalent acoustic signal level of 230 μPa/Hz1/2 at a frequency of 4 kHz. Experimental results provide a wide frequency response from 100 Hz to 18 kHz. As the sensor works at communication wavelength and the output laser can be electrically tuned in the 10 nm range, a multi-sensor network can be easily constructed with the dense wavelength division multiplexing devices. Extra lasers or demodulators are unnecessary thus the proposed sensor is low cost and easy fabrication. The proposed sensor shows broad applications prospect in remote oil and gas leakage exploration, photo-acoustic spectrum detection, and sound source location.

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Section: Sensor Design and Measurementsupporting

confidence: 87%

Section: Sensor Design and Measurementmentioning

confidence: 99%

An Acoustic Sensor Based on Active Fiber Fabry–Pérot Microcavities

Gao

Cui

et al. 2020

Sensors

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“…In 2020, an infrared microlaser with a narrow linewidth of 3.1 MHz was achieved by using a plane‐concave FP cavity on the endface of a single mode fiber. [ 98 ] Single mode laser emission has been achieved by shortening the FP cavity length or utilizing the intra‐cavity filtering effect. [ 99,100 ]…”

Section: Optical Fiber Microresonators For Optofluidic Lasingmentioning

confidence: 99%

Fiber Optofluidic Microlasers: Structures, Characteristics, and Applications

Yang

Gong

Zhang

et al. 2021

Laser & Photonics Reviews

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Herein, recent progress in fiber optofluidic lasers and their applications in biochemical detection are reviewed. The unique properties of optical fibers are introduced for the development of optofluidic microlasers, including high quality factor, small mode volume, high aspect ratio, high reproducibility, and low cost. Optical fiber microresonators based on Fabry-Pérot cavity, microring resonator or photonic bandgap cavity are highlighted to provide optical feedback for optofluidic lasing. For applications, the capability of fiber optofluidic lasers is emphasized to perform biochemical analysis with ultrahigh sensitivity, fast response, high throughput, and disposable optical biodetection. The challenges and prospects for fiber optofluidic lasers are also discussed.

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Arc discharge method to fabricate large concave structures for open-access fiber Fabry-Pérot cavities

Fang,

Cui,

Chen

et al. 2024

Opt. Express

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We present a novel micro-fabrication technique for creating concave surfaces on the endfacets of photonic crystal fibers. A fiber fusion splicer is used to generate arc discharges to melt and reshape the fiber endfacet. This technique can produce large spherical concave surfaces with roughness as low as 0.12 nm in various types of photonic crystal fibers. The deviation of fabricated surface and a spherical profile in the region of 70 µm in diameter is less than 50 nm. The center of the concave surface and the fiber mode field are highly coincident with a deviation less than 500 nm. Finesse measurements have shown that a Fabry-Pérot cavity composed of the fiber fabricated using this method and a plane mirror maintains finesse of 20000. This method is easy to replicate, making it a practical and efficient approach to fabricate concave surface on fibers for open-access fiber Fabry-Pérot cavities.

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Fast and wide-band tuning single-mode microlaser based on fiber Fabry–Pérot microcavities

Cited by 3 publications

References 31 publications

An Acoustic Sensor Based on Active Fiber Fabry–Pérot Microcavities

An Acoustic Sensor Based on Active Fiber Fabry–Pérot Microcavities

Fiber Optofluidic Microlasers: Structures, Characteristics, and Applications

Arc discharge method to fabricate large concave structures for open-access fiber Fabry-Pérot cavities

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