Proof-of-concept demonstration of double-slope-assisted Brillouin optical correlation-domain reflectometry

Abstract

We develop a new configuration of distributed strain and temperature sensing technology called double-slope-assisted Brillouin optical correlation-domain reflectometry. Its loss-independent operation is demonstrated through simplified simulation and proof-of-concept experiments using a standard silica single-mode fiber.

Highly stable Brillouin laser with controllable tuning based on fiber ring resonator

“…1) The stimulated Brillouin laser (SBL) has the characteristics of low noise and narrow bandwidth, enabling the production of high coherent light. It has great potential in various applications such as sensing, [2][3][4][5][6] coherent optical communications 7) and microwave photonics. 8) Currently, the generation of conventional fiber Brillouin laser necessitates either a sufficiently long fiber length or a substantial input optical power, thereby posing significant challenges in achieving miniaturized SBL emission.…”

Fiber-tip temperature sensing probe based on standard Brillouin optical correlation-domain reflectometry with sinusoidal modulation

“…To date, no technique (except for the one we have developed) has been reported that enables low-cost temperature measurement near the tip of a commercially available optical fiber without necessitating any specialized processing. Alternatively, distributed sensing techniques capable of providing longitudinal temperature variations along the fiber have been explored, [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] but these too come with a high cost.…”

“…Brillouin-based single-end-access distributed sensors can be categorized into three types: Brillouin optical time-domain reflectometry (BOTDR), [12][13][14] Brillouin optical frequency-domain reflectometry (BOFDR), 15) and BOCDR. [16][17][18][19][20][21][22][23][24][25][26] Each technique has its own merits and demerits, and here we focus on BOCDR.…”