Table 1.
Changes in wavelength shift and transmission loss over three temperature cycles under LPFG (D = 65 μm, Λ = 620 μm).
| Cycle | Wavelength (nm) | Transmission Loss (dB) |
|---|---|---|
| 1st | 3.54 | −3.44 |
| 2nd | 3.49 | −4.63 |
| 3rd | 3.49 | −2.95 |
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