A Vertical-Cavity Surface-Emitting Laser (VCSEL) is a kind of semiconductor laser, whose laser is emitted perpendicular to the top surface. Developed on the basis of gallium arsenide semiconductor material, it is different from LED (Light Emitting Diode) and LD (Laser Diode). It consists of a mirror surface, an active layer and a metal contact layer. The two transmitting mirrors are P-type and N-type Bragg transmitters. The active region is composed of quantum hydrazine. A metal contact layer is made on the outer surface of the P-type DBR to form ohmic contact, and a circular outlet is made on the P-type DBR to output laser. It has a small far-field divergence angle, and the divergence angle beam is narrow and round. And the threshold current is low and the modulation frequency is high, which can reach 300KHz. The wavelength tuning can be realized by changing the laser current and temperature. Package with TEC and PD inside, which is specially designed for high-speed optical fiber communication.
Conditions: P= 20°C, IOP=2.0mA, unless otherwise stated (p = Chip Back Temperature, controlled by TEC).
Parameter | Symbol | Value | ℃Unit |
Min | Typical | Max |
Peak light output power @25℃ | P | 1.0 | 1.6 |
| mW |
Operating bias current. | Iop | 0 | 18 | 25 | mA |
Operating temperature range | Top | -40 | 25 | 85 | °C |
Threshold current | Ith |
| 8 | 18 | mA |
Slope efficiency (CW, TC = 25℃) | Se | 0.14 | 0.18 |
| mW/mA |
Laser driving voltage | VCC | 0 | 1.5 | 2.5 | V |
Resistance | RS |
| 50 |
| Ω |
Central wavelength （Please indicate the required central wavelength in the purchase order.） | Δλ | 1530 | 1550 | 1580 | nm |
Side mode suppression ratio | SMSR | 30 | 40 |
| dB |
Width (-3db full width at half maximum), continuous bias =IOP. | σ |
|
| 300 | MHz |
Relative intensity noise | RIN |
|
| -128 | dB/Hz |
Tec voltage | VTEC |
| 0.35 | 1.5 | V |
Tec current | ITEC |
| 0.05 | 0.6 | A |
Tec Characteristics | Unit | Min | Typ | Max | Remark |
Tec Current | mA | -150(Heating) |
| +300(Cooling) | Proper Heart Sink Required |
NTC Thermistor Resistance | KΩ | 9.5 | 10.0 | 10.5 | T=25℃@10 KΩ |
NTC Thermistor Resistance | KΩ | 10/exp{3892-(1/289K-I/TOP)} |
Optical Spectrum data(Testing Condition@15deg,10mA)
L-I Curve(T@25°C)
Power Stability
Wavelength Tunability
Wavelength Stability(1.949pm)
Beam Quality 2D/3D
2D
3D
1550nm SM VCSEL Laser diode for 4.25Gbps High speed Communication.pdf
