Photonic Crystal Fiber Sensors for Strain and Temperature Measurement

Table 1

Strain and temperature sensitivities of LPGs in IG-PCFs by different methods.

Inscriptionmethod	Period (𝝁𝐦)	Length (𝐦𝐦)	Wavelength (𝐧𝐦)	𝐝𝝀/𝐝𝜺 (𝐩𝐦/𝝁𝜺)	𝐝𝝀/𝐝𝐓 (𝐩𝐦/^∘𝐂)	Reference
CO2 laser (with grooves)	410	16.4	1546.87	−7.6	3.91	[5]
CO2 laser (without grooves)	410	16.4	1548.38	−0.31	3.84	[5]
Arc discharge	400	37.6	1668	−2.5	3.4	[6]
Arc discharge	1000	19.0	1403	−2.08	2.2	[6]
CO2 laser*			1526.5	−0.45	58	[16]
UV exposure*	320		1573.1	7.31	46	[17]
Arc discharge*	540		1580	~1.5	66–73	[18]

*Conventional single-mode fiber-based LPG.