Table 1 Different lengths of fiber 1 and 2 for the proposed comb filter structure.

From: A simple all-fiber comb filter based on the combined effect of multimode interference and Mach-Zehnder interferometer

Sample Number

Fiber 1 (NC125) Length (mm)

Fiber 2 (NC61.5) Length (mm)

FSR (nm)

1

1.9

2.0

0.455

2

1.9

3.8

0.227

3

3.9

3.7

0.230

4

2.2

3.6

0.235

5

1.6

3.2

0.243

6

3.2

2.5

0.303

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