Tunable single-mode fiber laser with a low-cost active Fabry-Perot filter of ultranarrow-linewidth and high side-mode-suppressing ratio

Abstract A switchable and tunable erbium-doped fiber laser with a linear cavity based on fiber Bragg gratings embedded in Sagnac rings is proposed and experimentally verified. Due to the stress birefringence effect and the polarized hole burning effect, which are introduced into the single-mode fiber in the polarization controllers (PCs) by the PCs, the designed laser can achieve seven kinds of laser-states output including three kinds of single-wavelength laser states, three kinds of dual-wavelength laser states and one kind of triple-wavelength laser state. The optical signal-to-noise ratios of the output wavelengths are all higher than 52 dB, and the wavelength shifts are all less than 0.04 nm. Furthermore, the temperature tuning of the wavelength range is also researched, which is about 1.2 nm. Due to advantages, such as low cost, simple structure, easy switching and multiple laser states, the designed laser has great application potential in laser radar, optical fiber sensing and so on.

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Experimental Research of Strain and Temperature Based on EFPI Sensor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.130-134.4185 ◽

2011 ◽

Vol 130-134 ◽

pp. 4185-4188

Author(s):

Xiu Feng Yang ◽

Chun Yu Zhang ◽

Zheng Rong Tong

Keyword(s):

Low Cost ◽

Single Mode ◽

Single Mode Fiber ◽

Good Reliability ◽

High Repetition ◽

Sensing Applications ◽

Fabry Perot ◽

Wet Chemical ◽

The Many ◽

Multi Mode

An extrinsic Fabry-Perot (F-P) interferometric (EFPI) sensor by using simple etching and fusing method is proposed and demonstrated. The cavity is formed by wet chemical etching of multi-mode fiber (MMF) end face in hydrofluoric acid solutions, and then it is fused to the end of a single-mode fiber (SMF) to form an extrinsic F-P structure. The strain and temperature of EFPI sensor are studied experimentally. The experimental results show that the interference wavelength becomes 2.648nm longer while the strain increases from 0N to 637N, and the strain sensitivity is about 0.004nm/N, and linearity is 0.999. The interference wavelength becomes 0.032nm shorter while the temperature increases from 20°C to 100°C. This kind of sensor has the many advantages of easy fabrication, good reliability, high-repetition, small size, low cost and mass-production, which offers great prospect for sensing applications.

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A Micro Bubble Structure Based Fabry–Perot Optical Fiber Strain Sensor with High Sensitivity and Low-Cost Characteristics

Sensors ◽

10.3390/s17030555 ◽

2017 ◽

Vol 17 (3) ◽

pp. 555 ◽

Cited By ~ 26

Author(s):

Lu Yan ◽

Zhiguo Gui ◽

Guanjun Wang ◽

Yongquan An ◽

Jinyu Gu ◽

...

Keyword(s):

Low Cost ◽

Strain Sensor ◽

Glass Tube ◽

High Sensitivity ◽

Single Mode ◽

Single Mode Fiber ◽

Fabry Perot ◽

Micro Bubble ◽

Bubble Structure ◽

Cost Characteristics

A high-sensitivity, low-cost, ultrathin, hollow fiber micro bubble structure was proposed; such a bubble can be used to develop a high-sensitivity strain sensor based on a Fabry–Perot interferometer (FPI). The micro bubble is fabricated at the fiber tip by splicing a glass tube to a single mode fiber (SMF) and then the glass tube is filled with gas in order to expand and form a micro bubble. The sensitivity of the strain sensor with a cavity length of about 155 μm and a bubble wall thickness of about 6 μm was measured to be up to 8.14 pm/μϵ.

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Linewidth reduction and wavelength tuning of an erbium-doped fiber laser by use of a single-mode-selected and side-mode-suppressed Fabry-Perot laser diode

Applied Optics ◽

10.1364/ao.42.005477 ◽

2003 ◽

Vol 42 (27) ◽

pp. 5477 ◽

Cited By ~ 1

Author(s):

Gong-Ru Lin ◽

Jung-Rung Wu

Keyword(s):

Fiber Laser ◽

Laser Diode ◽

Single Mode ◽

Wavelength Tuning ◽

Erbium Doped ◽

Fabry Perot ◽

Side Mode

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A High Sensitivity Temperature Sensing Probe Based on Microfiber Fabry-Perot Interference

Sensors ◽

10.3390/s19081819 ◽

2019 ◽

Vol 19 (8) ◽

pp. 1819 ◽

Cited By ~ 11

Author(s):

Zhoubing Li ◽

Yue Zhang ◽

Chunqiao Ren ◽

Zhengqi Sui ◽

Jin Li

Keyword(s):

Low Cost ◽

High Sensitivity ◽

Single Mode ◽

Single Mode Fiber ◽

Temperature Sensing ◽

Compact Structure ◽

Fabry Perot ◽

Temperature Monitor ◽

Core Fiber ◽

Fitting In

In this paper, a miniature Fabry-Perot temperature probe was designed by using polydimethylsiloxane (PDMS) to encapsulate a microfiber in one cut of hollow core fiber (HCF). The microfiber tip and a common single mode fiber (SMF) end were used as the two reflectors of the Fabry-Perot interferometer. The temperature sensing performance was experimentally demonstrated with a sensitivity of 11.86 nm/°C and an excellent linear fitting in the range of 43–50 °C. This high sensitivity depends on the large thermal-expansion coefficient of PDMS. This temperature sensor can operate no higher than 200 °C limiting by the physicochemical properties of PDMS. The low cost, fast fabrication process, compact structure and outstanding resolution of less than 10−4 °C enable it being as a promising candidate for exploring the temperature monitor or controller with ultra-high sensitivity and precision.

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Erbium Ring Fiber Laser Cavity Based on Tip Modal Interferometer and Its Tunable Multi-Wavelength Response for Refractive Index and Temperature

Applied Sciences ◽

10.3390/app8081337 ◽

2018 ◽

Vol 8 (8) ◽

pp. 1337 ◽

Cited By ~ 1

Author(s):

Yanelis Lopez-Dieguez ◽

Julian Estudillo-Ayala ◽

Daniel Jauregui-Vazquez ◽

Luis Herrera-Piad ◽

Juan Sierra-Hernandez ◽

...

Keyword(s):

Refractive Index ◽

Fiber Laser ◽

Low Cost ◽

Ring Cavity ◽

Laser Cavity ◽

Single Mode ◽

Cost Effective ◽

Single Mode Fiber ◽

Fiber Structure ◽

Multi Wavelength

A tunable multi-wavelength fiber laser is proposed and demonstrated based on two main elements: an erbium-doped fiber ring cavity and compact intermodal fiber structure. The modal fiber interferometer is fabricated using the cost-effective arc splice technique between conventional single-mode fiber and microfiber. This optical fiber structure acts as a wavelength filter, operated in reflection mode. When the refractive index and temperature variations are applied over the fiber filter, the ring laser cavity provides several quad-wavelength laser spectra. The multi-wavelength spectra are tuned into the C-band with a resolution of 0.05 nm. In addition, the spectra are symmetric with minimal power difference between the lasing modes involved, and the average of the side mode suppression ratio is close to 37 dB. This laser offers low-cost implementation, low wavelength drift, and high power stability, as well as an effect of easy controllability regarding tuned multi-wavelength.

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