Laser-Induced Thermal Effect for Tunable Filter Employing Ferrofluid and Fiber Taper Coupler

Lin, Wei; Liu, Bo; Zhang, Hao; Song, Binbin; Yan, Donghang; Miao, Yinping; Liu, Haifeng; Liu, Yange

doi:10.1109/lpt.2015.2463743

Cited by 17 publications

(3 citation statements)

References 24 publications

(29 reference statements)

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“…This input-power-dependent blue-shift could be attributed to the temperature increase on light absorption by the graphene nanosheets [28], [29]. The change in temperature influenced the refractive index of the surrounding media, leading to changes in the transmission spectrum [27]- [29]. For a detailed analysis of the temperature-dependent transmission spectrum, the graphene SA was placed on a temperature-controlled board.…”

Section: Fabrication and Characterization Of The Graphene Samentioning

confidence: 99%

Tunable Q-Switched Fiber Laser Based on a Graphene Saturable Absorber Without Additional Tuning Element

et al. 2019

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A tunable passively Q-switched fiber laser is fabricated using a graphene saturable absorber. The graphene saturable absorber is composed of a tapered fiber coated with graphene nanosheets. It combines the abilities of a saturable absorber and power-dependent tunable filter, thereby simplifying the structure of the tunable passively Q-switched fiber laser. The transmission peak of the graphene saturable absorber is linearly dependent on the input power and temperature, with slopes of approximately −0.35 nm/mW and −3.63 nm/°C, respectively. The Q-switched fiber laser exhibits a tunable wavelength range of 7 nm (from 1558 to 1565 nm). The output pulse offers the shortest pulse duration of 2.22 µs with a repetition rate of 39.1 kHz and the widest pulse duration is 5.9 µs that corresponds to a repetition rate of 21.3 kHz. The maximum pulse energy is 251.9 nJ, corresponding to an average output power of 8.6 mW.

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Section: Fabrication and Characterization Of The Graphene Samentioning

confidence: 99%

Tunable Q-Switched Fiber Laser Based on a Graphene Saturable Absorber Without Additional Tuning Element

et al. 2019

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“…Magnetic fluids (MFs), as a type of novel functional material, exhibit a tunable refractive index (RI), tunable birefringence and tunable transmittance [10]- [12]. Many photonic devices have been developed with MF, such as couplers [13]- [16], magnetic-field sensors [17]- [20], tunable slow light [21] and tunable filters [22], [23]. An optical fiber with an MF has become one of the promising devices for the measurement of magnetic fields and electric current.…”

Section: Introductionmentioning

confidence: 99%

A Highly Sensitive Magnetic Field Sensor Based on a Tapered Microfiber

Miao

et al. 2018

IEEE Photonics J.

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A compact all-fiber magnetic field sensor based on the combination of a magnetic fluid and a nonadiabatic microfiber is experimentally demonstrated. By using a fusion splicer combined with an additional flame brushing, the nonadiabatic microfiber, with an abrupt taper, a small waist diameter and a long region, provides a strong evanescent field and a long sensitive distance. The result indicates that a sensitivity as high as 309.3 pm/Oe can be achieved in the range from 0 to 200 Oe. The designed nonadiabatic microfiber sensing structure suggests potential application as a tunable all-in-fiber photonic and other newly fashioned magneto-optical photonic devices.

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“…This will lead to many unique optical properties of MF under an applied magnetic field, such as tunable refractive index (RI), tunable birefringence, and tunable transmittance [ 2 ]. Until now, many optical devices and applications based on MF have been proposed and demonstrated, for example, optical gratings [ 3 , 4 ], optical switches [ 5 ], magnetic field sensors [ 1 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ], tunable filters [ 17 ], tunable slow light [ 18 ], and couplers [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive Magnetic Field Sensing Based on Refractive-Index-Matched Coupling

Rao

Yao

et al. 2017

Sensors

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An ultrasensitive magnetic field sensor is proposed and investigated experimentally. The no-core fiber is fusion-spliced between two pieces of single-mode fibers and then immersed in magnetic fluid with an appropriate value of refractive index. Under the refractive-index-matched coupling condition, the guided mode becomes leaky and a coupling wavelength dip in the transmission spectrum of the structure is observed. The coupling wavelength dip is extremely sensitive to the ambient environment. The excellent sensitivity to the refractive index is measured to be 116.681 μm/RIU (refractive index unit) in the refractive index range of 1.45691–1.45926. For the as-fabricated sensors, the highest magnetic field sensing sensitivities of 6.33 and 1.83 nm/mT are achieved at low and high fields, respectively. The sensitivity is considerably enhanced compared with those of previously designed, similar structures.

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Laser-Induced Thermal Effect for Tunable Filter Employing Ferrofluid and Fiber Taper Coupler

Cited by 17 publications

References 24 publications

Tunable Q-Switched Fiber Laser Based on a Graphene Saturable Absorber Without Additional Tuning Element

Tunable Q-Switched Fiber Laser Based on a Graphene Saturable Absorber Without Additional Tuning Element

A Highly Sensitive Magnetic Field Sensor Based on a Tapered Microfiber

Ultrasensitive Magnetic Field Sensing Based on Refractive-Index-Matched Coupling

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