Insertion Loss

Coupling

Grade

Signal Path

Tap Path

Ratio

Insertion

Insertion

Max.

Max.

Max.

Max.

(dB)

(dB)

(dB)

(dB)

(dB)

(dB)

(dB)

(dB)

1%

P

NA/0.15

0.03

0.03

0.02

18.4/21.2

0.25

0.20

0.20

1%

A

NA/0.18

0.05

0.05

0.02

17.6/22.4

0.35

0.25

0.20

2%

P

NA/0.18

0.03

0.03

0.02

16.4/17.8

0.22

0.15

0.15

2%

A

NA/0.20

0.05

0.05

0.02

15.8/18.2

0.30

0.20

0.15

3%

P

NA/0.23

0.03

0.03

0.04

14.3/16.0

0.18

0.14

0.15

3%

A

NA/0.28

0.05

0.05

0.04

13.8/17.0

0.26

0.20

0.15

5%

P

NA/0.32

0.03

0.03

0.08

12.2/13.9

0.15

0.12

0.15

5%

A

NA/0.40

0.05

0.05

0.08

11.9/14.4

0.20

0.20

0.15

10%

P

NA/0.60

0.05

0.04

0.08

9.60/10.8

0.13

0.10

0.13

10%

A

NA/0.70

0.06

0.06

0.08

9.20/11.2

0.18

0.15

0.13

20%

P

NA/1.15

0.08

0.05

0.10

6.60/7.60

0.12

0.10

0.10

20%

A

NA/1.25

0.10

0.07

0.10

6.30/8.00

0.15

0.15

0.10

30%

P

NA/1.75

0.10

0.06

0.10

5.00/5.50

0.10

0.10

0.10

30%

A

NA/1.85

0.14

0.08

0.10

4.90/5.60

0.15

0.15

0.10

40%

P

NA/2.50

0.10

0.07

0.10

3.85/4.40

0.10

0.09

0.10

40%

A

NA/2.60

0.15

0.09

0.10

3.70/4.60

0.15

0.11

0.10

50%

P

2.8/3.20

0.10

0.08

0.10

2.80/3.20

0.10

0.08

0.10

50%

A

2.7/3.40

0.15

0.10

0.10

2.70/3.40

0.15

0.10

0.10

1. Tap ratio

≤ five percent, the Insertion Loss including WDL, PDL and TDL; Tap ratio > five percent, the Insertion Loss including WDL and PDL, not including TDL.

2. In 2x2 couplers with a coupling ratio of 20 percent or lower, insertion loss is not specified for launch through second input port (P4).

3. Change in insertion loss over the operating wavelength range.

4. Change in insertion loss over all input polarization states.

5. Change in insertion loss from –5 to 75°C. Guaranteed by design when tap ratio higher than five percent.

2

FUSED COUPLER, SINGLE WINDOW, LOW LOSS, C OR L BAND,

FFCH SERIES

Ф0.9

70

Ф3.56

2.0

Specifications in mm unless otherwise noted

Dimensions Diagrams

1x2 Models, L-Package

54

3.0

1x2 Models, S-Package