| 简介 |
The present invention relates to a phase shift interferometer using a rare earth element doped optical fiber, and more specifically, a phase transition interferometer using a doped optical fiber in which a rare earth element without a low cost production and heating problem is produced by generating a photopath difference inside the optical fiber by a pump light It relates to a interferometer. The phase transition interferometer using optical fiber in which the rare earth element is doped according to the present invention is applicable to the optical fiber interferometer by generating the optical path difference inside the optical fiber, and at the same time it can be used interchangeably with the bulk optical system, and since it uses the refractive index change of the core that makes up the optical fiber, there is an advantage of having a low dispersion effect in the interferometer using not only a single wavelength but also a multiwavelength, and since it uses pump light, the use of feedback elements is unnecessary and can be produced at a low cost, and it can be operated in a low-power pump light, so that there is no heat problem. In addition, the phase shift interferometer using optical fiber doped by rare earth elements according to the present invention has no mechanical operation, so there is less polarization problem or mechanical strength problem, and since it operates inside the optical fiber, there is an advantage that there is less warring caused by external vibration and external forces. |
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