Compact vector fiber-optic displacement sensor using an asymmetric Mach–Zehnder interferometer

Yin, Xiaolei; Zhou, Ruixiang

doi:10.1016/j.optcom.2017.04.069

Cited by 13 publications

(1 citation statement)

References 16 publications

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“…Different fiber-based devices have been reported for this purpose including fiber Brag gratings (FBG), multi-mode interference (MMI) filters, high-birefringence fiber optical loop mirror (Hi-Bi FOLM), tapered fiber interferometers, and in-fiber special-fiber Mach-Zehnder (MZ) interferometers, etc. [24][25][26][27][28][29][30][31][32]. In this regard, in-fiber interferometers based on a fiber micro-ball lens (MBL) exhibit suitable characteristics for its use in fiber-based optical systems.…”

Section: Introductionmentioning

confidence: 99%

TiOxNy Thin Film Sputtered on a Fiber Ball Lens as Saturable Absorber for Passive Q-Switched Generation of a Single-Tunable/Dual-Wavelength Er-Yb Double Clad Fiber Laser

et al. 2020

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The use of titanium oxynitride (TiOxNy) thin films as a saturable absorber (SA) element for generation of passive Q-switched (PQS) laser pulses, from a linear cavity Er-Yb double-clad fiber (EYDCF) laser, is demonstrated. Additionally, the deposition of the material as a thin film covering a fiber micro-ball lens (MBL) structure is reported for the first time. The TiOxNy coating is deposited by a direct current (DC) magnetron-sputtering technique. The MBL is inserted within the laser cavity in a reflection configuration, alongside a reflecting mirror. As a result, the coated fiber MBL simultaneously acts as a SA element for PQS laser pulses generation and as an interference filter for wavelength selection and tuning of the generated laser line. Tunable single-laser emission in a wavelength range limited by dual-wavelength laser generation at 1541.96 and 1547.04 nm is obtained. PQS laser pulses with a repetition rate from 18.67 to 124.04 kHz, minimum pulse duration of 3.57 µs, maximum peak power of 0.359 W, and pulse energy of 1.28 µJ were obtained in a pump power range from 1 to 1.712 W.

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