Abstract: We present a device which has potential for use as a fiber sensor. The device is formed by leading two of the output ports of a 3 $MUL 3 optical fiber flat fused coupler back to two of the input ports to form a double ring resonator structure. A 3 $MUL 3 flat fused coupler with coupling coefficient Kl $EQ 0.173 II and an excess loss of about 1 dB was fabricated. The double ring resonator was formed as described. By modulating one ring with Pz element, the finsse of the device was approximately 36. Therefore; the two rings may provide one ring as a reference arm and the other ring as a sensing arm. Thus the device may have potential for use as a sensitive optic fiber sensor.!2
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机译：摘要：我们提出了一种有潜力用作光纤传感器的设备。该设备是通过将3 $ MUL 3光纤扁平熔合耦合器的两个输出端口引回到两个输入端口以形成双环谐振器结构而形成的。制作了具有耦合系数Kl EQ 0.173 II和大约1 dB的过大损耗的3 MUL 3扁平熔融耦合器。如上所述形成双环谐振器。通过用Pz元素调制一个环，该装置的鳍片大约为36。两个环可以提供一个环作为参考臂，另一个环作为传感臂。因此，该设备可能具有用作敏感光纤传感器的潜力。2
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