| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| optical fiber diffraction gratings | 0.85 | 0.3 | 4360 | 80 | 34 |
| optical | 0.58 | 1 | 3009 | 25 | 7 |
| fiber | 0.81 | 1 | 7364 | 62 | 5 |
| diffraction | 1.8 | 0.4 | 2768 | 43 | 11 |
| gratings | 1.53 | 0.7 | 4410 | 94 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| optical fiber diffraction gratings | 0.36 | 0.2 | 2118 | 58 |
