Opticalpathlengthderivation

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Opticalpathlength

Yoshito Niwa, Koji Arai, Akitoshi Ueda, Masaaki Sakagami, Naoteru Gouda, Yukiyasu Kobayashi, Yoshiyuki Yamada, and Taihei Yano Appl. Opt. 48(32) 6105-6110 (2009)

Marketing and corporate communications professional experienced in high-level integrated strategies, storytelling, executive positioning, multi-stakeholder and multi-channel impactful programs, Mariana has been helping leaders, brands, and organizations achieve future-proof decision-making, effectively engage with stakeholders, communicate and adopt innovation. Mariana has worked for global PR agencies such as Edelman, MSL Group, and Ketchum in Brazil and Spain, has served as a global trend forecaster for the Copenhagen Institute for Futures Studies, and more recently has led the Americas Region as Client Strategy and Customer Success for a health tech in the United States.

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Opticalpathlengthdifference

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Opticalpathlengthequation

Honglei Yang, Xuejian Wu, Hongyuan Zhang, Shijie Zhao, Lijun Yang, Haoyun Wei, and Yan Li Appl. Opt. 55(34) D29-D34 (2016)

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We present a simple technique to actively stabilize the optical path length in an optical fiber. A part of the fiber is coated with a thin, electrically conductive layer, which acts as a heater. The optical path length is thus modified by temperature-dependent changes in the refractive index and the mechanical length of the fiber. For the first time, we measure the dynamic response of the optical path length to the periodic changes of temperature and find it to be in agreement with our former theoretical prediction. The fiber’s response to the temperature changes is determined by the speed of sound in quartz rather than by slow thermal diffusion. Making use of this fact, we succeeded in actively stabilizing the optical path length with a closed-loop bandwidth of 3.8 kHz.

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Opticalpathlengthdefinition

We present a simple technique to actively stabilize the optical path length in an optical fiber. A part of the fiber is coated with a thin, electrically conductive layer, which acts as a heater. The optical path length is thus modified by temperature-dependent changes in the refractive index and the mechanical length of the fiber. For the first time, we measure the dynamic response of the optical path length to the periodic changes of temperature and find it to be in agreement with our former theoretical prediction. The fiber’s response to the temperature changes is determined by the speed of sound in quartz rather than by slow thermal diffusion. Making use of this fact, we succeeded in actively stabilizing the optical path length with a closed-loop bandwidth of 3.8 kHz.

Marketing and corporate communications professional experienced in high-level integrated strategies, storytelling, executive positioning, multi-stakeholder and multi-channel impactful programs, Mariana has been helping leaders, brands, and organizations achieve future-proof decision-making, effectively engage with stakeholders, communicate and adopt innovation. Mariana has worked for global PR agencies such as Edelman, MSL Group, and Ketchum in Brazil and Spain, has served as a global trend forecaster for the Copenhagen Institute for Futures Studies, and more recently has led the Americas Region as Client Strategy and Customer Success for a health tech in the United States.

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution. Contact your librarian or system administrator or Login to access Optica Member Subscription