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LK-NYCMD CWDM Microwave DFB Laser Module
- Direct Modulation DFB Laser
- High-Dynamic-Range
- Wavelength: CWCM
- 18 GHz Bandwidth
- Low threshold current
- High output power
- 7pin butterfly package with SMA connector
- Operating case temperature: -40 to 70℃
- Enhanced Reliability
Product Description
LK-NYCMD laser is a high-performance, directly modulated Distributed Feedback (DFB) laser designed to excel in linear fiber optic communications for applications requiring extremely broad bandwidths. This series serves as a superior substitute to coaxial cable systems for the transmission of high-frequency signals at 12 GHz or 18 GHz.
By preserving the integrity of the RF signal in its original form, LK-NYCMD series enhances the reliability of microwave communication networks. Due to these characteristics, the series markedly improves signal quality across a range of applications, such as remote antenna control, telemetry, distribution of timing and reference signals, as well as measurement and delay line systems.
LK-NYCMD incorporates optical isolator, thermoelectric cooler (TEC), thermistor, laser diode chip, and monitor photodiode, all of which are sealed within a robust 7-pin butterfly package to ensure hermetic protection and maintain optimal performance.
Technical Specifications
| Absolute Maximum Ratings | ||||
|---|---|---|---|---|
| Parameter | Symbol | Min. | Max. | Unit |
| Laser diode forward current | If | - | 120 | mA |
| Laser diode reverse voltage | V | - | 1 | V |
| Front power | Pf | - | 20 | dBm |
| PD reverse voltage | V | - | 15 | V |
| Forward current (PD) | Im | - | 2 | mA |
| Operation temperature | To | -40 | +70 | °C |
| Storage temperature | Ts | -55 | +85 | °C |
| Storage relative humdity | Sr | - | 85 | % |
| Optical and Electrical Specification (Tc=25°C) | |||||||
|---|---|---|---|---|---|---|---|
| Parameter | Symbol | Test Condition | Min | Typ | Max | Units | Note |
| Wavelength | λ | IF = IOP, T = TOP | 1270 | CW | 1390 | nm | Option |
| Frequency | - | X Option | 0.3 | - | 12 | GHz | - |
| Ku option | 0.8 | - | 18 | ||||
| Optical Output Power | P | IF=Iop | - | 10 | - | mW | 1 |
| Thershold current | Ith | λ: CWDM | - | 10 | - | mA | - |
| Operation current | Iop | λ: CWDM | - | 55 | 100 | mA | - |
| Operation voltage | Vop | λ: CWDM | - | 1.5 | 2.5 | V | - |
| Slope efficiency | SE | - | 0.2 | - | - | W/A | - |
| Side-mode suppression ratio | SMSR | λ: CWDM, IF=Iop | 30 | - | - | dB | - |
| Rative Intensity Noise | RIN | - | - | -130 | dB/Hz | - | |
| Bandwidth (-3dB, I=60mA) | S21 | X Option | - | 12 | - | GHz | - |
| Ku option | - | 18 | - | ||||
| Return loss | VSWR | X Option | - | - | 2 | dB | - |
| Ku option | - | - | 2.2 | ||||
| Input 1 dB Compression | 15 | - | - | dBm | - | ||
| Thermistor Resistance | Rth | @25C | - | 10 | - | Kohm | - |
| TEC current | It | - | - | - | 1.2 | A | 2 |
| TEC voltage | Vt | - | - | 2.5 | V | 2 | |
| Capacitance (PD) | Ct | - | - | 20 | pF | - | |
| Monitoring current | Im | - | 0.10 | - | 2.0 | mA | - |
| Dark current (PD) | Id | - | - | 50 | nA | - | |
Notes:All laser chips come from wafers that have been certified using a representative lot of devices that must achieve an acceptable yield for burn-in.
1. Laser temperature set 25℃, bias current at 55mA
2. Operation case temperature -40~70℃
● Typical Data
(λ: CWDM, TC =25 ℃)
（ Fig. 1 X- Band S11 and S22 data ）
（ Fig. 2 Ku- Band S11 and S22 data ）
● Electrical schematic
| Lead# | Function |
| 1 | Thermistor |
| 2 | Thermistor |
| 3 | LD-(Bias) |
| 4 | PD+ |
| 5 | PD- |
| 6 | Cooler+ |
| 7 | Cooler- |
| 8 | LD-(RF) |
| 9 | Ground |
● Outline drawings(Unit: mm)
RF Connector: SMA
● Ordering Information
Sheet 1：
| Code | Typical Wavelength |
| CM | CWDM Coarse Wavelength Division Multiplexer 7PIN butterfly package |
Sheet 2：
| Code | Analog Bandwidth |
| X | 0.1 ～ 12 GHz |
| Ku | 1～ 18 GHz |
Sheet 3：
| Code | W1 | W2 | W3 | W4 | W5 | W6 | W7 |
| Wavelength(nm) | 1270 | 1290 | 1310 | 1330 | 1350 | 1370 | 1390 |
Sheet 4：
| Code | Connector Type | Remark |
| A | FC / APC | Single-mode 9 / 125 μm fiber pigtail, 0.9mm, 1m length |
| S | SC/APC | |
| N | No Connector |
● Precautions
The fiber bending radius no less than 20 mm for avoiding fiber damaged.
Be sure the fiber coupling facet is clean before connecting it to opto-circuit.
The suitable ESD protection is required in storage, transportation and using.
Applications
High-Speed Data Communications
Antenna Remoting
Cellular and PCS Networks
Analog RF links transmission
Military Communications
Tracking, Telemetry, and Control
Telemetry Systems
Military and Defense Systems
Detail
● Typical Data
(λ: CWDM, TC =25 ℃)
（ Fig. 1 X- Band S11 and S22 data ）
（ Fig. 2 Ku- Band S11 and S22 data ）
● Electrical schematic
| Lead# | Function |
| 1 | Thermistor |
| 2 | Thermistor |
| 3 | LD-(Bias) |
| 4 | PD+ |
| 5 | PD- |
| 6 | Cooler+ |
| 7 | Cooler- |
| 8 | LD-(RF) |
| 9 | Ground |
● Outline drawings(Unit: mm)
RF Connector: SMA
● Ordering Information
Sheet 1：
| Code | Typical Wavelength |
| CM | CWDM Coarse Wavelength Division Multiplexer 7PIN butterfly package |
Sheet 2：
| Code | Analog Bandwidth |
| X | 0.1 ～ 12 GHz |
| Ku | 1～ 18 GHz |
Sheet 3：
| Code | W1 | W2 | W3 | W4 | W5 | W6 | W7 |
| Wavelength(nm) | 1270 | 1290 | 1310 | 1330 | 1350 | 1370 | 1390 |
Sheet 4：
| Code | Connector Type | Remark |
| A | FC / APC | Single-mode 9 / 125 μm fiber pigtail, 0.9mm, 1m length |
| S | SC/APC | |
| N | No Connector |
●Precautions
The fiber bending radius no less than 20 mm for avoiding fiber damaged.
Be sure the fiber coupling facet is clean before connecting it to opto-circuit.
The suitable ESD protection is required in storage, transportation and using.
