Oplink Communications, Inc

Ultra-Low PDL Fused Tap Coupler

(1310, S, C, L Band)

LPTC Series

Insertion Loss Tables

Insertion Loss (IL) I : C or L band coupler

Insertion Loss (IL) II : 1310nm, S band coupler

Coupling Ratio

P Grade

A Grade

Signal

Tap

Signal

Tap

Signal

Tap

Signal

Tap

99/1

≤ 0.18

19.0-21.0

≤ 0.03

≤ 0.03

≤ 0.20

17.7-21.5

≤ 0.05

≤ 0.05

98/2

≤ 0.25

16.4-18.4

≤ 0.03

≤ 0.03

≤ 0.30

16.0-19.4

≤ 0.05

≤ 0.05

97/3

≤ 0.30

14.6-16.2

≤ 0.03

≤ 0.03

≤ 0.35

14.0-16.8

≤ 0.05

≤ 0.05

95/5

≤ 0.35

12.4-13.8

≤ 0.03

≤ 0.03

≤ 0.40

12.0-14.4

≤ 0.05

≤ 0.05

90/10

≤ 0.60

9.60-10.8

≤ 0.03

≤ 0.03

≤ 0.65

9.20-11.2

≤ 0.05

≤ 0.05

85/15

≤ 0.85

7.80-8.80

≤ 0.03

≤ 0.03

≤ 0.90

7.5-9.0

≤ 0.05

≤ 0.05

80/20

≤ 1.15

6.60-7.60

≤ 0.03

≤ 0.03

≤ 1.15

6.4-8.0

≤ 0.05

≤ 0.05

75/25

≤ 1.35

5.75-6.50

≤ 0.03

≤ 0.03

≤ 1.44

5.6-6.7

≤ 0.05

≤ 0.05

70/30

≤ 1.75

5.00-5.50

≤ 0.03

≤ 0.03

≤ 1.82

4.9-5.8

≤ 0.05

≤ 0.05

65/35

≤ 2.10

4.40-4.90

≤ 0.03

≤ 0.03

≤ 2.15

4.3-5.0

≤ 0.05

≤ 0.05

60/40

≤ 2.50

3.95-4.30

≤ 0.03

≤ 0.03

≤ 2.60

3.7-4.6

≤ 0.05

≤ 0.05

55/45

≤ 2.85

3.35-3.80

≤ 0.03

≤ 0.03

≤ 2.90

3.1-4.0

≤ 0.05

≤ 0.05

50/50

2.80-3.30

≤ 0.03

2.70-3.30

≤ 0.05

1. Insertion loss over operating wavelength range at ~23°C (excluding PDL and TDL).

2. Insertion loss change over the all input polarization states.

1. Insertion loss over operating wavelength range at ~23°C (excluding PDL and TDL). For S-band product, add 0.1dB due to water absorption peak of fiber.

2. Insertion loss change over the all input polarization states.

Coupling Ratio

P Grade

A Grade

Signal

Tap

Signal

Tap

Signal

Tap

Signal

Tap

99/1

≤ 0.18

18.2-21.0

≤ 0.03

≤ 0.03

≤ 0.23

17.4-21.5

≤ 0.05

≤ 0.05

98/2

≤ 0.25

16.0-18.6

≤ 0.03

≤ 0.03

≤ 0.30

15.2-19.8

≤ 0.05

≤ 0.05

97/3

≤ 0.30

14.4-16.4

≤ 0.03

≤ 0.03

≤ 0.34

13.7-17.1

≤ 0.05

≤ 0.05

95/5

≤ 0.35

12.2-14.0

≤ 0.03

≤ 0.03

≤ 0.40

11.8-14.7

≤ 0.05

≤ 0.05

90/10

≤ 0.60

9.40-11.0

≤ 0.03

≤ 0.03

≤ 0.65

9.00-11.3

≤ 0.05

≤ 0.05

85/15

≤ 0.90

7.70-8.85

≤ 0.03

≤ 0.03

≤ 0.85

7.4-9.1

≤ 0.05

≤ 0.05

80/20

≤ 1.15

6.30-7.80

≤ 0.03

≤ 0.03

≤ 1.15

6.0-8.1

≤ 0.05

≤ 0.05

75/25

≤ 1.50

5.45-6.70

≤ 0.03

≤ 0.03

≤ 1.44

5.5-6.8

≤ 0.05

≤ 0.05

70/30

≤ 1.75

4.60-5.75

≤ 0.03

≤ 0.03

≤ 1.82

4.7-5.9

≤ 0.05

≤ 0.05

65/35

≤ 2.05

4.10-5.05

≤ 0.03

≤ 0.03

≤ 2.02

4.2-5.0

≤ 0.05

≤ 0.05

60/40

≤ 2.50

3.85-4.40

≤ 0.03

≤ 0.03

≤ 2.60

3.7-4.6

≤ 0.05

≤ 0.05

55/45

≤ 2.85

3.15-3.80

≤ 0.03

≤ 0.03

≤ 2.81

3.1-4.0

≤ 0.05

≤ 0.05

50/50

2.70-3.40

≤ 0.03

2.60-3.50

≤ 0.05