Tunable Laser Optical Sub-Assembly TOSA TLDCD 2.5-10Gbps direct modulation
Key Features
- Up to 40 channels at 100 GHz spacing or up to 80 channels at 50GHz spacing
- C- or L-band
- Simple tuning algorithm
- 2.5-10Gbps direct modulation
- Small package size
Applications
- WDM-PON
- Colorless ONU
- Optical interconnects
- DWDM sparing
- Dynamic wavelength provisioning
- Wavelength routing
Description
Widely wavelength tunable semiconductor lasers are key components for next-generation optical networks. Conventional tunable lasers require complex fabrication processes such as non-uniform gratings and multiple epitaxial growths, and need multiple electrodes with complex control algorithms for wavelength tuning. As the dense wavelength division multiplexing (DWDM) technology extends towards access and data center networks, the cost reduction and operational simplicity have become more and more important. Lightip has developed a simple and compact tunable laser based on patented proprietary technologies. It consists of a half-wave coupled V-cavity laser with only three electrodes: one for gain and direct modulation, one for channel selection corresponding to the ITU grid, and the third for fine tuning when needed. The laser structure does not involve any grating or epitaxial regrowth,and has a size of only about 500m X 300m. The advantages of compactness, fabrication simplicity and easy wavelength control offer cost-effective tunable laser solutions for many applications in access and data center networks, and beyond.The TLDX155 series Transmitter Optical Sub-Assembly (TOSA)integrates a V-cavity edge-emitting tunable laser, a power monitoring photodiode, an isolator ,and a TEC controller. The connector type can be chosen from LC, SC or fiber-pigtail with FC/PC or FC/APC connector. It can provide up to 40 channels at 100GHz spacing or 80 channels at 50GHz spacing in C- or L- band (other wavelength bands available on request). The size of the 9-pin TOSA is only a small fraction of that of the conventional butterfly package.
Specifications
Parameters |
Min. |
Typ. |
Max. |
Unit |
Optical Output Power |
0 |
3 |
|
dBm
|
LD Operating Temperature |
10 |
35 |
65 |
℃
|
Ambient Operating Temperature |
0 |
|
70 |
℃
|
Gain Forward Bias Current |
25 |
30 |
100 |
mA
|
Channel Selector Current |
20 |
- |
140 |
mA
|
Fine Tuning Current |
20 |
25 |
50 |
mA
|
LD Forward Bias Voltage |
- |
- |
2.3 |
V |
Modulation Data Rate |
2.5-10 |
Gbps
|
Wavelength |
C- or L-band (other wavelengths available on request |
|
Channel Spacing |
50 or 100 |
GHz
|
Number of Channels |
16, 32, 40 @100GHz, or 32, 64, 80 @50GHz |
|
Side Mode Suppression Ratio |
35 |
38 |
- |
dB
|
Optical Isolation |
25 |
- |
- |
dB
|
Relative Intensity Noise |
- |
- |
-135 |
dB/Hz
|
Power Monitor Current |
20 |
- |
500 |
μA
|
Power Monitor Dark Current |
- |
- |
100 |
nA
|
TEC Current |
- |
0.7 |
1 |
A
|
TEC Voltage |
- |
2.2 |
3 |
V |
Total Power Consumption
(PLD + PTEC)
|
- |
2 |
3 |
W |
Thermistor B Constant |
- |
4050 |
- |
K |
Thermistor Resistance @25C |
9.5 |
10 |
10.5 |
kΩ
|