Cooled Analog Coaxial Laser Diode
Product Description：This cooled analog coaxial laser diode with built-in TEC/thermistor/MPD and modulation frequency up to 18GHz can be used in fiber optic RF, RF delay line, antenna remote control, GPS transmission, broadband microwave transmission and so on.
Tags：7 Pin Single-mode CWDM DWDM 18GHz
Applications： RF over Fiber (ROF)
Model： OD-LxTxxxDF-OWxx
Features
- 7 Pin coaxial package
- Single-mode fiber pigtail and FC/APC optical connector
- Built in TEC, thermistor and monitor photodiode (MPD)
- Matched to 50Ω
- High linearity DFB laser, CWDM and DWDM
- Direct modulation up to 18GHz
- With or without FPC optional
Applications
- RF over fiber
- RF delay line
- Antenna remoting
- GPS transmission
- Test and measurement
- Broadband microwave transmission
Absolute Maximum Ratings
| Parameter | Symbol | Condition | Min. | Max. | Unit |
|---|---|---|---|---|---|
| Operating Temperature | TOP | Case temperature | -40 | 70 | ˚C |
| Storage Temperature | TSTG | -40 | 85 | ˚C | |
| RF Input Power | PRF | 60 Seconds | -- | 20 | dBm |
| Laser Forward DC Current | IMAX | -- | 100 | mA | |
| Laser Reverse Voltage | VRLD | -- | 2 | V | |
| Photodiode Reverse Voltage | VRPD | -- | 20 | V | |
| TEC Voltage | VTEC | Continuous | -1.4 | 1.4 | V |
| TEC Current | ITEC | Continuous | -1.0 | 1.0 | A |
| Relative Humidity | HR | -- | 95 | % | |
| Pressure | PR | 86 | 106 | kPa | |
| ESD | -- | Human body model | Class 1A | ||
Electrical and Optical Characteristics (@25°C)
| Parameter | Symbol | Test Condition | Min | Typ. | Max | Unit |
|---|---|---|---|---|---|---|
| Center Wavelength（1） | λc | CWDM ITH +20mA | λc -3 | λc | λc +3 | nm |
| Center Wavelength（1） | λc | DWDM ITH +20mA | λc -0.2 | λc | λc +0.2 | nm |
| Optical Power | POP | IOP = ITH +20mA | 3 | 3.5 | -- | mW |
| Threshold Current | ITH | TLD =25°C | -- | 5 | 11 | mA |
| Laser Drive Current | IOP | -- | -- | 100 | mA | |
| Laser Forward Voltage | VF | I= IMAX | -- | 1.5 | 2 | V |
| Relative Intensity Noise | RIN | P=POP | -- | -- | -150 | dB/Hz |
| Side Mode Suppression | SMSR | P=POP | 30 | 40 | -- | dB |
| Optical Isolation | ISO | 30 | 35 | -- | dB | |
| MPD Current | IPD | Iop =50mA | 50 | -- | -- | μA |
| MPD Dark Current | ID | -- | -- | 100 | nA | |
| Tracking Error | TE | P=POP | -1.0 | -- | +1.0 | dB |
| TEC Voltage | VTEC | All case | -- | -- | 1.4 | V |
| TEC Current | ITEC | All case | -- | -- | 1.0 | A |
| Thermistor Resistance | RTH | T=25°C | 9900 | 10000 | 10100 | Ω |
| Thermistor β coefficient | β | 0 / 50°C | -- | 3930 | -- |
Note（1）：Wavelength option refer to order information.
CWDM RF Characteristics（2）
| Parameter | Test Condition | Min | Typ. | Max | Unit | |||
| Frequency Range | LST | 0.01 ~ 3 | GHz | |||||
| LCT | 0.01 ~ 6 | |||||||
| LXT | 0.01 ~ 12 | |||||||
| LYT | 0.1 ~ 16 | |||||||
| LUT ○1 | 0.1 ~ 18 | |||||||
| LUT ○2 | 0.5 ~ 18 | |||||||
| LKT | 0.5 ~ 21 | |||||||
| Gain | -30 | -26 | -- | dB | ||||
| Amplitude Flatness | LST ， 100M~3GHz | -- | ±1.2 | ±2.0 | dB | |||
| LCT ， 100M~6GHz | -- | ±1.5 | ±2.2 | |||||
| LXT ， 100M~12GHz | 1270nm~1370nm | -- | ±2.0 | ±2.5 | ||||
| 1550nm | -- | ±2.0 | ±3.0 | |||||
| LYT ， 100M~16GHz | -- | ±2.0 | ±3.0 | |||||
| LUT ○1 ， 100M~18GHz | -- | ±2.5 | ±3.0 | |||||
| LUT ○2 ， 500M~18GHz | -- | ±2.0 | ±3.0 | |||||
| LKT ， 500M~21GHz | -- | ±2.0 | ±3.0 | |||||
| Input Return Loss (50Ω) | LST ， 100M~3GHz | -- | -15 | -10 | dB | |||
| LCT ， 100M~6GHz | -- | -10 | -7 | |||||
| LXT ， 100M~12GHz | -- | -10 | -5 | |||||
| LYT ， 100M~16GHz | -- | -10 | -5 | |||||
| LUT ○1 ， 100M~18GHz | -- | -10 | -4 | |||||
| LUT ○2 ， 500M~18GHz | -- | -10 | -4 | |||||
| LKT ， 500M~21GHz | -- | -10 | -3 | |||||
| Input 1 dB Compression | 1GHz | -- | 18 | -- | dBm | |||
| Spurious-free Dynamic Range | LST | 1GHz | 1270nm~1370nm | 111 | 117 | -- | dB .Hz2/3 | |
| 1530nm/1550nm | 111 | 117 | -- | |||||
| 2GHz | 1270nm~1370nm | 109 | 115 | -- | ||||
| 1530nm/1550nm | 109 | 115 | -- | |||||
| 3GHz | 1270nm~1370nm | 107 | 115 | -- | ||||
| 1530nm/1550nm | 105 | 113 | -- | |||||
| LCT | 1GHz | 1270nm~1370nm | 111 | 117 | -- | |||
| 1530nm/1550nm | 111 | 117 | -- | |||||
| 3GHz | 1270nm~1370nm | 107 | 115 | -- | ||||
| 1530nm~1550nm | 105 | 113 | -- | |||||
| 6GHz | 1270nm~1370nm | 104 | 111 | -- | ||||
| 1530nm~1550nm | 103 | 110 | -- | |||||
| LXT | 1GHz | 111 | 117 | -- | ||||
| 6GHz | 104 | 111 | -- | |||||
| 12GHz | 99 | 107 | -- | |||||
| LYT | 1GHz | 110 | 115 | -- | ||||
| 10GHz | 105 | 111 | -- | |||||
| 16GHz | 100 | 106 | -- | |||||
| LUT ○1 | 1GHz | 110 | 115 | -- | ||||
| 10GHz | 105 | 110 | -- | |||||
| 18GHz | 100 | 105 | -- | |||||
| LUT ○2 | 1GHz | 110 | 115 | -- | ||||
| 10GHz | 105 | 110 | -- | |||||
| 18GHz | 100 | 105 | -- | |||||
| LKT | 1GHz | 110 | 115 | -- | ||||
| 10GHz | 105 | 110 | -- | |||||
| 21GHz | 97 | 102 | -- | |||||
| Input Third-Order Intercept | LST | 1GHz | 30 | 34 | -- | dBm | ||
| 2GHz | 28 | 33 | -- | |||||
| 3GHz | 26 | 33 | -- | |||||
| LCT | 1GHz | 30 | 34 | -- | ||||
| 3GHz | 26 | 33 | -- | |||||
| 6GHz | 25 | 31 | -- | |||||
| LXT | 1GHz | 30 | 34 | -- | ||||
| 6GHz | 25 | 31 | -- | |||||
| 12GHz | 20 | 28 | -- | |||||
| LYT | 1GHz | 28 | 32 | -- | ||||
| 10GHz | 25 | 30 | -- | |||||
| 16GHz | 22 | 26 | -- | |||||
| LUT ○1 | 1GHz | 30 | 34 | -- | ||||
| 10GHz | 28 | 32 | -- | |||||
| 18GHz | 23 | 27 | -- | |||||
| LUT ○2 | 1GHz | 30 | 34 | -- | ||||
| 10GHz | 28 | 32 | -- | |||||
| 18GHz | 23 | 27 | -- | |||||
| LKT | 1GHz | 30 | 34 | -- | ||||
| 10GHz | 28 | 32 | -- | |||||
| 21GHz | 20 | 24 | -- | |||||
| Noise Figure | LST | 1270nm~1370nm | -- | 33 | 37 | dB | ||
| 1GHz | 1530nm/1550nm | -- | 33 | 37 | ||||
| 1270nm~1370nm | -- | 34 | 38 | |||||
| 2GHz | 1530nm/1550nm | -- | 35 | 39 | ||||
| 1270nm~1370nm | -- | 35 | 39 | |||||
| 3GHz | 1530nm/1550nm | -- | 37 | 42 | ||||
| LCT | 1270nm~1370nm | -- | 33 | 37 | ||||
| 1GHz | 1530nm/1550nm | -- | 33 | 37 | ||||
| 1270nm~1370nm | -- | 35 | 39 | |||||
| 3GHz | 1530nm/1550nm | -- | 37 | 42 | ||||
| 1270nm~1370nm | -- | 39 | 43 | |||||
| 6GHz | 1530nm/1550nm | -- | 40 | 45 | ||||
| LXT | 1GHz | -- | 33 | 37 | ||||
| 6GHz | -- | 39 | 43 | |||||
| 12GHz | -- | 41 | 45 | |||||
| LYT | 1GHz | -- | 33 | 37 | ||||
| 10GHz | -- | 37 | 42 | |||||
| 16GHz | -- | 41 | 46 | |||||
| LUT ○1 | 1GHz | -- | 35 | 39 | ||||
| 10GHz | -- | 41 | 45 | |||||
| 18GHz | -- | 43 | 47 | |||||
| LUT ○2 | 1GHz | -- | 35 | 39 | ||||
| 10GHz | -- | 41 | 45 | |||||
| 18GHz | -- | 43 | 47 | |||||
| LKT | 1GHz | -- | 35 | 39 | ||||
| 10GHz | -- | 41 | 45 | |||||
| 21GHz | -- | 45 | 49 | |||||
Note(2) ：Assembled in module testing with WXG Photodiode receiver and 1.0-meter SMF-28 fiber, for reference, no RF data in DT07 test report.
DWDM RF Characteristics（3）
| Parameter | Test Condition | Min | Typ. | Max | Unit | |
| Frequency Range | LST | 0.01 ~ 3 | GHz | |||
| LCT | 0.01 ~ 6 | |||||
| LXT | 0.01 ~ 12 | |||||
| Gain | -30 | -26 | -- | dB | ||
| Amplitude Flatness | LST ， 100M~3GHz | -- | ±1.5 | ±2.0 | dB | |
| LCT ， 100M~6GHz | -- | ±1.8 | ±2.2 | |||
| LXT ， 100M~12GHz | -- | ±2.0 | ±2.5 | |||
| Input Return Loss (50Ω) | LST ， 100M~3GHz | -- | -15 | -10 | dB | |
| LCT ， 100M~6GHz | -- | -10 | -7 | |||
| LXT ， 100M~12GHz | -- | -10 | -5 | |||
| Input 1 dB Compression | 1GHz | -- | 18 | -- | dBm | |
| Spurious-free Dynamic Range | LST | 1GHz | 112 | 118 | -- | dB . Hz2/3 |
| 2GHz | 110 | 115 | -- | |||
| 3GHz | 108 | 113 | -- | |||
| LCT | 1GHz | 112 | 118 | -- | ||
| 3GHz | 108 | 113 | -- | |||
| 6GHz | 99 | 105 | -- | |||
| LXT | 1GHz | 109 | 115 | -- | ||
| 6GHz | 102 | 108 | -- | |||
| 12GHz | 95 | 101 | -- | |||
| LST | 1GHz | 33 | 38 | -- | dBm | |
| Input Third-Order Intercept | ||||||
| 2GHz | 31 | 35 | -- | |||
| 3GHz | 29 | 33 | -- | |||
| LCT | 1GHz | 33 | 38 | -- | ||
| 3GHz | 29 | 33 | -- | |||
| 6GHz | 22 | 27 | -- | |||
| LXT | 1GHz | 28 | 33 | -- | ||
| 6GHz | 24 | 29 | -- | |||
| 12GHz | 20 | 25 | -- | |||
| Noise Figure | LST | 1GHz | -- | 35 | 39 | dB |
| 2GHz | -- | 36 | 40 | |||
| 3GHz | -- | 37 | 41 | |||
| LCT | 1GHz | -- | 35 | 39 | ||
| 3GHz | -- | 37 | 41 | |||
| 6GHz | -- | 43 | 47 | |||
| LXT | 1GHz | -- | 34 | 38 | ||
| 6GHz | -- | 41 | 45 | |||
| 12GHz | -- | 47 | 51 | |||
Note (3) ：Assembled in module testing with WXG Photodiode receiver and 1.0-meter SMF-28 fiber, for reference, no RF test data in DT07 test report.
Fiber Specification
| Parameter | Note |
|---|---|
| Fiber Type | Single-Mode |
| Connector Type | FC/APC (4) |
| Pigtail Length | 1m |
| Minimum Bend Radius | G.652.D 35mm |
Note (4) : Another optical connector available uponrequest.
Pin Definitions
Bottom view
| Name | Note | |
|---|---|---|
| 1 | RF | RF input |
| 2 | TEC+ | Current into pin 2 cools the laser |
| 3 | TEC- | Current into pin 3 heats the laser |
| 4 | MPD+ | Monitor photodiode anode, cathode is case ground |
| 5 | THERM | One node of thermistor resistance, another node is case ground |
| 6 | BIAS_LD- | Laser cathode, negative voltage bias, anode is case ground |
| 7 | CASE | Connect to GND, MPD cathode |
Heat Dissipation Requirements
In order to ensure proper performance, heat sinking and heat removal must be provided by the user to limit maximum temperature of the device.
Mechanical Drawing (Unit： mm)
Without FPC
With FPC
Ordering Information
| OD | - | LxT | xxx | D | F | - | O | W | x0 |
|---|---|---|---|---|---|---|---|---|---|
| LST: 3.0GHz LCT: 6.0GHz LXT: 12GHz LYT: 16GHz LUT: 18GHz LKT: 21GHz | Wavelength CWDM:127:1270nm…137: 1370nm 153: 1530nm 155: 1550nm DWDM:xxC: xxis ITU channel number as below table, such as 24C is1558.17nm | OpticalConnector F： FC/APC | Operating Temperature Range W: -40 to 70℃ | 00: without FPC 30: with FPC |
| xx | Frequency(THz) | Centerwavelength(nm) | xx | Frequency(THz) | Centerwavelength(nm) |
|---|---|---|---|---|---|
| 17 | 191.7 | 1563.86 | 40 | 194.0 | 1545.32 |
| 18 | 191.8 | 1563.05 | 41 | 194.1 | 1544.53 |
| 19 | 191.9 | 1562.23 | 42 | 194.2 | 1543.73 |
| 20 | 192.0 | 1561.42 | 43 | 194.3 | 1542.94 |
| 21 | 192.1 | 1560.61 | 44 | 194.4 | 1542.14 |
| 22 | 192.2 | 1559.79 | 45 | 194.5 | 1541.35 |
| 23 | 192.3 | 1558.98 | 46 | 194.6 | 1540.56 |
| 24 | 192.4 | 1558.17 | 47 | 194.7 | 1539.77 |
| 25 | 192.5 | 1557.36 | 48 | 194.8 | 1538.98 |
| 26 | 192.6 | 1556.55 | 49 | 194.9 | 1538.19 |
| 27 | 192.7 | 1555.75 | 50 | 195.0 | 1537.40 |
| 28 | 192.8 | 1554.94 | 51 | 195.1 | 1536.61 |
| 29 | 192.9 | 1554.13 | 52 | 195.2 | 1535.82 |
| 30 | 193.0 | 1553.33 | 53 | 195.3 | 1535.04 |
| 31 | 193.1 | 1552.52 | 54 | 195.4 | 1534.25 |
| 32 | 193.2 | 1551.72 | 55 | 195.5 | 1533.47 |
| 33 | 193.3 | 1550.92 | 56 | 195.6 | 1532.68 |
| 34 | 193.4 | 1550.12 | 57 | 195.7 | 1531.90 |
| 35 | 193.5 | 1549.32 | 58 | 195.8 | 1531.12 |
| 36 | 193.6 | 1548.51 | 59 | 195.9 | 1530.33 |
| 37 | 193.7 | 1547.72 | 60 | 196.0 | 1529.55 |
| 38 | 193.8 | 1546.92 | 61 | 196.1 | 1528.77 |
| 39 | 193.9 | 1546.12 |