| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| long optical delay lines | 1.49 | 1 | 7700 | 94 | 24 |
| long | 0.47 | 0.4 | 111 | 15 | 4 |
| optical | 1.89 | 0.8 | 9602 | 20 | 7 |
| delay | 0.7 | 1 | 8628 | 41 | 5 |
| lines | 1.11 | 0.8 | 5855 | 5 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| long optical delay lines | 0.74 | 0.4 | 7672 | 91 |
