Table 2.

Comparison of our result with some the previous published ones.

Ref. no./year	Sensitivity (nm/°C)	Topological design	Temperature range (°C)
103/2016	-2.08	Not achieved	25–60
104/2018	1.5	Not achieved	35–100
105/2020	0.36	Not achieved	10–80
106/2021	3.2	Not achieved	20–50
107/2022	1.41	Not achieved	20–80
108/2022	-0.306	Not achieved	40–50
109/2023	5.2	Not achieved	10–60
110/2023	7.13	Not achieved	0–70
111/2023	0.173	Not achieved	75–375
112/2023	0.085	Not achieved	25–900
This work	0.27	Achieved	75–375