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    • 5. 发明申请
    • Sweep-Free Stimulated Brillouin Scattering-Based Fiber Optical Sensing
    • 基于无扫描的布里渊散射光纤光学传感
    • US20130025374A1
    • 2013-01-31
    • US13411390
    • 2012-03-02
    • Asher VoskoboinikAlan E. WillnerMoshe Tur
    • Asher VoskoboinikAlan E. WillnerMoshe Tur
    • G01D5/32
    • G01D5/35364G01D5/35303G01D5/35387
    • Methods and systems used to perform sweep-free stimulated Brillouin scattering-based fiber optical sensing are described. In one aspect, a method includes interrogating different parts of a Brillouin gain spectrum using multiple optical tones in an optical fiber. The interrogating includes sending at least two pump tones into the optical fiber from one end of the optical fiber, such that a frequency spacing between the pump tones is larger than a width of the Brillouin gain spectrum. The interrogating also includes sending at least two probe tones into the optical fiber from another end of the optical fiber, such that a frequency spacing between the probe tones is different from the frequency spacing between the pump tones. The method further includes generating a sensing output based on the interrogating.
    • 描述了用于执行无扫描受激布里渊散射的光纤传感的方法和系统。 在一个方面,一种方法包括使用光纤中的多个光学色调来询问布里渊增益谱的不同部分。 询问包括从光纤的一端发送至少两个泵浦音调到光纤中,使得泵浦频率之间的频率间隔大于布里渊增益频谱的宽度。 询问还包括从光纤的另一端发送至少两个探测音调到光纤中,使得探测音之间的频率间隔与泵音之间的频率间隔不同。 该方法还包括基于询问产生感测输出。