Table 4.
Gratings maximizing the power exchange from the inner cladding modes M2-M33 towards the fundamental core mode M1 at the environmental temperature 25 °C.
| Grating | ΛR (μm) | Coupled Cladding Modes | LGmaxc (cm) | PM1maxc (mW) | Percent Increase of M1 Power |
|---|---|---|---|---|---|
| R1 | 551.0 | M4 | 5.400 | 54.23 | 78.96% |
| R2 | 499.0 | M7 | 7.885 | 67.3 | 122.09% |
| R3 | 442.4 | M10 | 9.470 | 63.42 | 109.29% |
| R4 | 423.4 | M11 | 6.270 | 65.59 | 116.45% |
| R5 | 377.0 | M14 | 7.980 | 65.15 | 115.00% |
| R6 | 359.8 | M15 | 9.080 | 64.19 | 111.83% |
| R7 | 250.4 | M16.M17 | 9.445 | 54.84 | 81.86% |
| R8 | 230.6 | M21 | 8.650 | 38.44 | 26.85% |
| R9 | 228.4 | M21 | 4.705 | 64.61 | 113.21% |
| R10 | 216.6 | M23 | 7.98 | 65.27 | 115.72% |
| R11 | 188.0 | M26.M27 | 8.480 | 76.75 | 153.28% |
| R12 | 187.6 | M27 | 2.655 | 73.53 | 142.65% |
| R13 | 182.0 | M29 | 7.435 | 42.19 | 39.23% |
| R14 | 170.4 | M30,M31 | 3.100 | 75.31 | 148.52% |
| R15 | 169.4 | M30,M31 | 7.140 | 45.31 | 49.52% |
| R16 | 158.6 | M33 | 9.38 | 38.98 | 28.63% |