Features
● 7 Pin.
● Aspheric lens cap.
● Integrated TEC controls temperature stability.
● Output power 1.6mW
● Single mode, can pass C-L band.
● Wide spectrum tuning range: > 8nm.
● Fast wavelength tuning (~100KHz).
E/O Characteristics
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 C | 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 | 12 | mA |
Slope efficiency (CW, TC = 25 c) | 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 | 1400 |
| 1410 | nm |
Guaranteed tuning range. Applying a positive voltage will lower the peak wavelength. | λ | 8 | 10 |
| nm |
Maximum frequency tuning response. | fmax | 100 | 200 | - | KHz |
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 |
Tuning voltage | Vture | 0 | Test Sheet | Test Sheet | V |
Tuning current | Itune | 0 | - | 100 | μA |
Tec voltage | VTEC |
| 0.35 | 1.5 | V |
Tec current | ITEC |
| 0.05 | 0.6 | A |
Experimental Data
We have carried out related experiments on VCSEL lasers, and measured the relationship between voltage, current and wavelength, and frequency of VCSEL lasers.
Spectrum
Iop=19mA,CW@25℃（0 - +15V）
L-I Curve ( T@25°C )
2. Relationship between current and wavelength.
Tuning Characteristics
We keep the voltage constant and adjust the current from 13 to 25mA, and test it once every 3mA. It is found that the wavelength changes greatly when the current is adjusted, and it presents a positive linear curve.
3. Load changes at different frequencies.
Load 5V voltage and 20KHz frequency waveform.
Load 5V voltage and 40KHz frequency waveform
Load 5V voltage, 60KHz frequency waveform..
Load 5V voltage, 80KHz frequency waveform..
Load 5V voltage, 100KHz frequency waveform..
Load 5V voltage, 120KHz frequency waveform..
Load 5V voltage, 140KHz frequency waveform..
Give a fixed voltage of 5V and adjust the frequency value to get the above figure. Our modulation frequency is very high, which can carry more information and has a faster response speed.
Pin definition
The generation of VCSEL laser is mainly composed of three parts, namely laser working substance, pump source and optical resonant cavity. The pump source is used to excite the working substance, so that the number of particles is reversed and laser light is emitted. Through the resonant cavity formed by the bottom and top mirrors, the oscillation is amplified in the laser cavity and output from the top mirror, and the output light is only concentrated in the part with no oxide layer in the middle, thus forming a vertical laser emission, thus obtaining stable, continuous and high-quality laser with a certain power.
