Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Bai-Ou Guan"'
Publikováno v:
SPIE Proceedings.
A novel fiber-to-fiber tip-reflection sensing configuration for power-referenced refractometry with the capability to measure surrounding refractive index (SRI) as low as 1.33 is proposed and demonstrated. A short D-shaped fiber stub is parallel adja
Publikováno v:
SPIE Proceedings.
In this paper, an abnormal grating evolution was recorded during microfiber Bragg grating (mFBG) inscription under 193nm excimer laser. Within 20 minutes exposing, a Type IIa FBG could be obtained with above 20dB strength in 8.5 μm microfiber. This
Publikováno v:
SPIE Proceedings.
Broadband-trimming band-rejection filters based on chirped and tilted fiber Bragg gratings (CTFBG) are proposed and experimentally demonstrated. The flexible chirp-rate and wide tilt-angle provide the gratings with broadband filtering functions over
Publikováno v:
SPIE Proceedings.
The polarimetric sensing characteristics of multi-mode-fiber based tilted fiber Bragg grating (MMF-TFBG) have been analyzed and experimentally demonstrated. The physical “enlarged” fiber core enables the tilted gratings to excite multi high-order
Publikováno v:
SPIE Proceedings.
In this paper, temperature compensated microfiber Bragg grating (mFBG) is realized by use of a liquid with a negative thermo-optic coefficient. The effects of grating elongation and the index change of silica glass are compensated by the liquid throu
Publikováno v:
SPIE Proceedings.
We demonstrated a novel method for temperature-independent refractive index measurement by use of a Bragg grating fabricated in a highly birefringent rectangular microfiber. The two reflective peaks corresponding to two polarization axes exhibit almo
Publikováno v:
SPIE Proceedings.
The inscription of fiber Bragg gratings was demonstrated by 193 nm ArF excimer laser in microfibers drawn from the standard single mode telecommunication fiber. Fiber Bragg gratings are directly inscribed in a series of microfibers with diameter rang
Publikováno v:
SPIE Proceedings.
We experimentally demonstrate a novel fiber-optic pressure and temperature sensor using dual-FBG written in grapefruit microstructured fiber (GMF) and standard single-mode fiber (SMF). The pressure sensitivity of FBG in GMF is much larger than that o
Autor:
Bai-Ou Guan, Yang Zhang
Publikováno v:
SPIE Proceedings.
A high sensitivity displacement sensor based on a dual-polarization fiber grating laser incorporated with a cantilever beam is demonstrated. The cantilever beam transforms the displacement into a transverse force to the fiber grating laser which chan
Publikováno v:
SPIE Proceedings.
We present an ultra-short distributed Bragg reflector fiber laser photowritten in Er/Yb co-doped fiber. The total length of the fiber laser is only 8.4 mm. The lasing threshold is less than 1 mW. The optical signal-to-noise ratio of the laser output