The Oplink LPTC (1x2 and 2x2) coupler series feature exceptionally low polarizatio
dependent loss on both signal and tap ports as well as excellent uniformity and low
excess loss. They are available with various tap ratios, wavelength ranges, fiber types,
and connector options. All devices are shown to be able to handle high optical power
up to 4W and are tested according to industry standard procedures. Reliabilityis-
guaranteed through stringent tests to fully meet Telcordia GR-1221 requirements.
Oplink can provide customized designs to meet specialized feature applications. Also,
Oplink offers modular assemblies that integrate other components to form a full
functionmodule or subsystem.
Applications
CATV
Local Area Networks
Testing Instruments
Signal Monitoring in EDFA
Port 1 In
L
Port 2 Main (High%)
Port 4 (terminated for
1x2 configuration)
Ø
Port 3 Tap (Low%)
Performance Specifications
Parameter
1310nm
S band
C band
L band
Wavelength Range
Fiber Type
Insertion Loss
1
Return Loss
Directivity
Temperature Dependent Loss
2
Optical Power Handling
Operating Temperature Range
3
Storage Temperature Range
Package Dimension
4
Qualifications
1420~1500
1530~1565
1570~1605
Corning SMF-28
See Insertion Loss Table I, II
min
55
min
55
max
Signal Path: 0.02~0.10, Tap Path:
0.10~0.20
max
4
-40 to 75
-40 to 85
P1: 250µm SMF-28 bare fiber
(Ø) 3.0 x (L) 47
P2: 900µm loose tube
(Ø) 3.0 x (L) 60
P3: 3mm cable
(L) 96 x (W) 12 x (H) 6.4
Telcordia GR-1221
1270~1350
nm
dB
dB
dB
W
°C
°C
mm
1. Values are referenced without connector loss.
2. Change in insertion loss from -5 to 75°C. Values are depended on coupling ratio, for 99/1 coupler Temperature Dependent Loss
(TDL) ~0.02/0.20dB. As tap ratio increase, TDL decreases for tap path, while increases for signal path. All TDL is specified from
-5 to 75°C
3. Operating temperature range changes to -5 to 75°C in P2, P3 package and all package with connectors.
4. The mechanical tolerance should be +/-0.2 mm on all package dimensions unless otherwise custom specified.
Oplink Communications, Inc.
R3.20070802
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
P Grade
Coupling Ratio
A Grade
IL (dB)
1
Signal
99/1
98/2
97/3
95/5
90/10
85/15
80/20
75/25
70/30
65/35
60/40
55/45
50/50
Tap
≤0.18
19.0-21.0
≤0.25
16.4-18.4
≤0.30
14.6-16.2
≤0.35
12.4-13.8
≤0.60
9.60-10.8
≤0.85
7.80-8.80
≤1.15
6.60-7.60
≤1.35
5.75-6.50
≤1.75
5.00-5.50
≤2.10
4.40-4.90
≤2.50
3.95-4.30
≤2.85
3.35-3.80
2.80−3.30
PDL (dB)
Signal
Tap
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
2
IL
Signal
≤0.20
≤0.30
≤0.35
≤0.40
≤0.65
≤0.90
≤1.15
≤1.44
≤1.82
≤2.15
≤2.60
≤2.90
1
(dB)
Tap
17.7-21.5
16.0-19.4
14.0-16.8
12.0-14.4
9.20-11.2
7.5-9.0
6.4-8.0
5.6-6.7
4.9-5.8
4.3-5.0
3.7-4.6
3.1-4.0
2
PDL (dB)
Signal
Tap
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤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.
Insertion Loss (IL) II : 1310nm, S band coupler
P Grade
Coupling Ratio
A Grade
IL (dB)
Signal
Tap
1
99/1
98/2
97/3
95/5
90/10
85/15
80/20
75/25
70/30
65/35
60/40
55/45
50/50
≤0.18
18.2-21.0
≤0.25
16.0-18.6
≤0.30
14.4-16.4
≤0.35
12.2-14.0
≤0.60
9.40-11.0
≤0.90
7.70-8.85
≤1.15
6.30-7.80
≤1.50
5.45-6.70
≤1.75
4.60-5.75
≤2.05
4.10-5.05
≤2.50
3.85-4.40
≤2.85
3.15-3.80
2.70−3.40
PDL (dB)
Signal
Tap
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
≤0.03
2
IL (dB)
Signal
Tap
1
≤0.03
≤0.23
17.4-21.5
≤0.30
15.2-19.8
≤0.34
13.7-17.1
≤0.40
11.8-14.7
≤0.65
9.00-11.3
≤0.85
7.4-9.1
≤1.15
6.0-8.1
≤1.44
5.5-6.8
≤1.82
4.7-5.9
≤2.02
4.2-5.0
≤2.60
3.7-4.6
≤2.81
3.1-4.0
2.60−3.50
PDL
2
(dB)
Signal
Tap
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
≤0.05
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.
Oplink Communications, Inc.
R3.20070802
Ultra-Low PDL Fused Tap Coupler
(1310, S, C, L band)
LPTC Series
Ordering Information
Oplink can provide a remarkable range of customized optical solutions. For detail, please contact Oplink's OEM design team
or account manager for your requirements and ordering information (510) 933-7200.
