Tunable dual-wavelength fiber laser based on an MMI filter in a cascaded Sagnac loop interferometer

Ma, Lin; Kang, Zexin; Qi, Yanhui; Jian, Shuisheng

doi:10.1088/1054-660x/24/4/045102

Cited by 19 publications

(14 citation statements)

References 17 publications

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“…2(a). The initial input electric field of E in with two orthogonal components in the x-y plane can be expressed by Jones vector 18,19 :…”

Section: Principlementioning

confidence: 99%

Tunable and switchable fiber laser based on modal interference

Sun

et al. 2015

Mod. Phys. Lett. B

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A tunable and switchable erbium-doped fiber (EDF) laser based on modal interference has been proposed and experimentally demonstrated in this paper. Here a core-offset structure has been used to excite the cladding modes and a segment of polarization maintaining fiber inserted in a Sagnac loop interferometer has been used as wavelength selective component. By adjusting the statement of polarization controller (PC) and the bending of the core-offset structure, a tunable and switchable fiber laser with the signal-to-noise ratio (SNR) of more than 50 dB has been achieved in this paper.

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“…2(a). The initial input electric field of E in with two orthogonal components in the x-y plane can be expressed by Jones vector 18,19 :…”

Section: Principlementioning

confidence: 99%

Tunable and switchable fiber laser based on modal interference

Sun

et al. 2015

Mod. Phys. Lett. B

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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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“…However, the potential of using MMI filters for dual-wavelength laser generation, has been underexploited. To our knowledge, only few researches of dual-wavelength fibre lasers in which a SMS structure is used for dual-wavelength generation have been reported [16][17][18]. However, the use of a single SMS structure in these investigations, limits the laser lines wavelength separation and make difficult the wavelength selection and the cavity losses adjustment.…”

Section: Introductionmentioning

confidence: 99%

MMI filters configuration for dual-wavelength generation in a ring cavity erbium-doped fibre laser

Álvarez-Tamayo

Aguilar-Soto

Durán-Sánchez

et al. 2016

J. Eur. Opt. Soc.-Rapid Publ.

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Background: Dual wavelength laser generation has been of constant interest due to their applications in optical communications and teraheartz generation. A novel configuration for Dual-wavelength laser generation based on the use of a couple of multimode interference (MMI) filters is demonstrated in a ring cavity Erbium-doped fibre laser. Methods: The MMI filters consist of a segment of no-core fibre spliced between two SMF-28 single mode fibre segments. The MMI filters configured as a Mach-Zehnder interferometer, are used as transmission spectral filters for simultaneous generation of two laser wavelengths. An optical attenuator is used to adjust the intra-cavity losses for dual-wavelength laser generation. Results: Laser emission at 1540.4 and 1554 nm for a wavelength separation of~13.6 nm is obtained. The laser wavelengths output power stability variations with the applied pump power is also experimentally discussed. Conclusions: The use of MMI filters in the proposed dual-wavelength laser filter is experimentally demonstrated as a reliable device for dual-wavelength generation in fibre lasers.

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Tunable dual-wavelength fiber laser based on an MMI filter in a cascaded Sagnac loop interferometer

Cited by 19 publications

References 17 publications

Tunable and switchable fiber laser based on modal interference

Tunable and switchable fiber laser based on modal interference

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

MMI filters configuration for dual-wavelength generation in a ring cavity erbium-doped fibre laser

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