Switchable multiple lasing oscillations in an erbium-doped fiber ring laser using a single stage of a Sagnac loop mirror

Kim, R. K.; Han, Young‐Geun

doi:10.1007/s00340-011-4529-9

Cited by 18 publications

(10 citation statements)

References 15 publications

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“…However, the spectral behavior of most tunable comb filters tends to change the whole spectrum, or all channel transmissivities in the tuning process, which results in the simultaneous change in multiple output characteristic parameters. For example, the change in number of lasing lines is always accompanied by change in channel spacing [10,12] or peak location [15]. Independent control over number of lasing lines without affecting channel spacing is challenging.…”

Section: Introductionmentioning

confidence: 99%

“…To achieve stable multiwavelength lasing, many methods have been proposed to suppress the mode competition in the erbium-doped fiber at room temperature, including chirped fiber Bragg grating (FBG) [13,14], single stage of a Sagnac loop mirror [15]. However, the spectral behavior of most tunable comb filters tends to change the whole spectrum, or all channel transmissivities in the tuning process, which results in the simultaneous change in multiple output characteristic parameters.…”

Section: Introductionmentioning

confidence: 99%

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Tunable multiwavelength erbium-doped fiber laser based on nonlinear optical loop mirror and birefringence fiber filter

Quan

Tian

et al. 2015

Appl. Phys. B

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four-wave mixing [1,2], polarization hole burning [3,4], frequency shift feedback [5], intensity-dependent loss (IDL) [6][7][8][9], phase modulation [10], stimulated Brillouin scattering [11], etc. In practical applications, it highly demands tunable MWEDFL which allows that both the number and the wavelength of lasing lines can be tunable for a better convenience.In order to build tunable MWEDFL, there are two primary methods. The first type is based on the IDL effect. IDL effect is usually induced by nonlinear optical loop mirror (NOLM) or nonlinear polarization rotation (NPR), in which input signal with higher power obtains higher loss than the one with lower power when it feedbacks to the laser cavity. This feature can be used as an intensity equalizer to suppress the mode competition and obtain the stable multiwavelength oscillation [6-9]. As the multiwavelength lasing oscillation is a balance between IDL and mode competition, the change in IDL breaks the original balance state, resulting in the change in number and wavelength of lasing lines. Through IDL modulation, the adjustments for number of lasing lines within dozens amount and wavelength range shift within 30 nm have been experimentally demonstrated [6]. However, because the comb filter is not tunable, the channel wavelength is fixed. In wavelength tuning, the lasing lines just jump among channels defined by the comb filter, meaning the scanning resolution is determined by the channel spacing [6,8].The other method is actively tuning the transmission spectrum of a comb filter and consequently tuning multiwavelength lasing output characteristics, such as lasing lines number and wavelength. There are also two types of tunable comb filters that have been studied for this purpose. The first type of filter is based on the tunable periodic comb filter, including birefringence fiber filter (BFF) [9], MachZehender interferometer (MZI) [10,12], superimposed Abstract A tunable multiwavelength erbium-doped fiber laser (MWEDFL) based on nonlinear optical loop mirror (NOLM) and tunable birefringence fiber filter (BFF) is proposed and demonstrated. By combination of intensitydependent loss modulation induced by NOLM and pump power adjustment, the proposed laser can achieve independent control over the number of lasing lines, without affecting other important characteristics such as channel spacing and peak location. In addition, the laser allows wavelength tuning with both the peak location and the spectral range of lasing lines controllable. Specifically, the peak location of lasing lines can be controlled to scan the whole spectral range between adjacent channels of comb filter by adjusting the BFF. Moreover, the spectral range of lasing lines can be controlled by adjusting NOLM. This tunable MWEDFL may be useful for fiber-optic communication and fiber-optic sensing.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tunable multiwavelength erbium-doped fiber laser based on nonlinear optical loop mirror and birefringence fiber filter

Quan

Tian

et al. 2015

Appl. Phys. B

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“…The main component to obtaining tunable and multiple wavelengths laser emission is the wavelength selector filter (SWF, Selective wavelength Filter). This filter is implemented in different ways, such as using Fiber Bragg Gratings(FBG) [2,3], Fabry-Perot interferometers (FPI) [4,5], Sagnac interferometers [6,7], and Mach-Zehnder interferometer(MZI) [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Temperature Sensor Using Fiber Ring Laser Based On a Core-Offset Mach-Zehnder Interferometer

Contreras

2021

Supl. Rev. Mex. Fis.

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The development of fiber optic sensors receives special interest since they can be used in multiple applications. As a result, fiber optic laser-sensor schemes had emerged as a reliable device, due to its characteristics such as: high power, low threshold, and high stability. In this work, it is proposed a fiber laser-sensor based on a ring cavity configuration. The cavity is operated by a core-offset Mach-Zehnder interferometer, which is used as a wave selection filter and temperature detection device. Here, the proposed fiber laser-sensor exhibits sensing properties such as sensitivity of 0.03119 pm/°C , dynamic range of 90ºC and a signal to noise ratio of 52 dB

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“…Recently, switchable multiwavelength EDFLs have been extensively researched for their flexible switching characteristics. Various schemes including a nonlinear optical loop mirror incorporating multiple fiber Bragg gratings (FBGs) [1], optical-injection controlling [2], a single stage of a Sagnac loop mirror [3], intracavity polarization selective tilted fiber gratings [4] have been proposed to suppress the HLBE of erbium ions for obtaining stably switchable multiwavelength operation.…”

Section: Introductionmentioning

confidence: 99%

Tunable and switchable six-wavelength erbium-doped fiber ring laser

Cheng¹,

Zhang²,

Sharafudeen³

et al. 2014

Laser Phys.

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A tunable and switchable six-wavelength erbium-doped fiber ring laser based on a fiber Bragg grating based FP filter (FBG-FPF) and a polarization-maintaining fiber Sagnac loop (PMFSL) is proposed and demonstrated experimentally at room temperature. The FBG-FPF with low insertion loss is used to generate dense multiwavelength output. The PMFSL acts as a comb filter and frequency stabilizer. Through adjusting the squeezed fiber polarization controllers, six kinds of single-wavelength with the tunable range of 11 nm, eleven kinds of dual-wavelength, three kinds of triple-wavelength and one kind of six-wavelength can be obtained and switched with one another. All lasing lines with 3 dB linewidth of less than 0.29 nm and optical signal-to-noise ratio of more than 22 dB locate in the range of C-and L-bands of the optical communication waveband.

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Switchable multiple lasing oscillations in an erbium-doped fiber ring laser using a single stage of a Sagnac loop mirror

Cited by 18 publications

References 15 publications

Tunable multiwavelength erbium-doped fiber laser based on nonlinear optical loop mirror and birefringence fiber filter

Tunable multiwavelength erbium-doped fiber laser based on nonlinear optical loop mirror and birefringence fiber filter

Temperature Sensor Using Fiber Ring Laser Based On a Core-Offset Mach-Zehnder Interferometer

Tunable and switchable six-wavelength erbium-doped fiber ring laser

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