Key Features
· Up to 40 channels at 100 GHz spacing or up
to 80 channels at 50GHz spacing
· O- band or C- band or L-band
· EML Tunable Chip
· Simple tuning algorithm
· 10 - 25 Gbps EA modulation
· Small package size
Applications
· WDM-PON
· Colorless ONU
· Intelligent optical interconnects
· DWDM sparing
· Dynamic wavelength provisioning
· Wavelength routing
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 500mm ′ 300mm. The advantages of compactness, fabrication simplicity and easy wavelength control offer
cost-effective tunable laser solutions for many applications in metro and access networks, and beyond.
The TLDXE series Transmitter Optical Sub-Assembly (TOSA)
integrates a V-cavity edge-emitting
tunable EML laser, 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 for
tunable lasers.
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 | 10 – 25 | 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 - 40 | - | dB |
Optical Isolation | 25 | - | - | dB |
Relative Intensity Noise | - | - | -135 | dB/Hz |
Power Monitor Current | - | - | - | - |
Power Monitor Dark Current | - | - | - | - |
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 @25°C | 9.5 | 10 | 10.5 | kΩ |
* Product specifications are subject to change without notice.
(in millimeters)
|