| Autor: |
Zhu, Wanlai, Zhou, Guorui, Yi, Zao, You, Hui, Wang, Dongying, Zeng, Qingdong, Yao, Caizhen, Miao, Xinxiang |
| Zdroj: |
IEEE Sensors Journal; November 2024, Vol. 24 Issue: 21 p34432-34439, 8p |
| Abstrakt: |
Currently, there are few reports of optic fiber devices that combine efficient photothermal optical modulation and multifunctional sensing in one device. We reported an optical microfiber coupler (OMC) decorated by erbium-ytterbium co-doped silica film with significant photothermal effect, which can be used in the field of optical modulation and multifunctional sensing. It is experimentally verified that a 980-nm laser driven by the current of 500 mA enables the temperature of the decorated OMC waist region up to $82.5~^{\circ }$ C, and it reveals extreme layer stability, remarkable adsorption properties, and excellent thermo-desorption effects of the device. The OMC encapsulated with polydimethylsiloxane (PDMS) has a temperature sensitivity of up to 1106.88 pm/°C in the temperature range of $28~^{\circ }$ C– $48~^{\circ }$ C. And achieved a maximum air-flow sensitivity of 529.39 nm $\cdot $ s/m within the speed range of 0–18.2 m/s using hot-wire-based method. The device is placed in a $20~^{\circ }$ C water tank to achieve a modulation sensitivity of 24.47 pm/mA with a maximum modulation depth of 16.7 dB, effectively addressing both the response delay and high-temperature hazard caused by thermal accumulation. The device’s compact structure, low cost, high sensitivity, and multifunctional applications make it a promising application in the field of multifunctional integration. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
