FWM8612
With the growing demand for communication data, it is necessary to have a larger capacity optical communication transmission system, which drives optical component/network equipment manufacturers to use coherent communication modules based on wavelength tunable lasers in their transmission backbone networks. At present, the wavelength tunable lasers and coherent modules will be used in MAN, or even access networks. Accurate measurement and wavelength calibration are crucial for tunable lasers. With the continuous increase of communication channels from the initial 40 waves to the current maximum 800, efficient and accurate wavelength testing is more critical than ever.
- High wavelength accuracy – ±0.33ppm (typ: ±0.5pm) for wavelength calibration and metrology
- Fast Test – All-solid-state structure, non-mechanical moving parts optical design, fast test speed
- Support broadband mode – Accurate wavelength measurement of 96Gbaud modulated optical signals
- Rich trigger function – Support external or internal trigger
Functions and Benefits
High Speed
The FWM8612 wavelength meter is in the ordinary single sampling mode, the sampling rate can be as high as 200Hz, which is 20-100 times that of the ordinary multi-wavelength based Michelson interferometer, the power accuracy <0.5dB, and the repeatability <0.02dB.
Internal trigger sampling mode
FWM8612 has a built-in trigger signal generator, and its fast measurement function, as shown in the figure below, triggers 1000Hz to measure the switching cycle and stability of ordinary mechanical optical switches, and can observe the transient wavelength and power information of the tunable laser.
External trigger sampling mode
FWM8612 fast wavelength meter supports 5V TTL trigger level and external trigger with sampling rate up to 1000Hz. It can simultaneously measure the scanning spectrum of tunable lasers, ModeMap scanning and channel calibration of tunable lasers, and synchronous monitoring of wavelength power of pulsed lasers.
Broadband working mode
High-speed modulation will make the original narrow linewidth laser (usually kHz~MHz) spectral broadening (96Gbaud modulation signal)。
Broadband working mode
FWM8612 has been further optimized on the basis of the original, and finally realized the accurate wavelength measurement of 400G QAM16 (96Gbaud) signal.
| Wavelength Index | Wavelength Range | 1250~1650nm(182~240THz) |
| Wavelength Accuracy | ±0.33ppm (±0.5pm@1550nm) | |
| Wavelength Repeatability | ±0.07ppm (±0.1pm@1550nm) | |
| Wavelength Stability | <±0.3pm@24 Hour | |
| Wavelength Resolution | 0.1pm | |
| Wavelength Unit | Nm,cm-1,THz | |
| Power Index | Power Accuracy | ±0.5dB(±30nm from 1310 and 1550nm) |
| Power Linearity | ±0.5dB(1250–1650nm) | |
| Polarization loss | ±0.5dB(1250–1650nm) | |
| Display Resolution | 0.01dB | |
| Unit | dBm，mW | |
| Multi-peak detection index | Minimum frequency difference between main peak and secondary peak of multi-peak detection | 2300MHz |
| Maximum frequency difference between main peak and secondary peak of multi-peak detection | 15dB | |
| Measuring speed indicators | Single Sample | Single sample～200Hz |
| Velocity@External Trigger | External trigger 1~1000Hz | |
| Velocity @ Internal Trigger | Internal trigger 1~1000Hz | |
| Optical signal input indicator | Maximum Bandwidth | 25GHz（200pm@1550nm） |
| Input optical signal power range | -30dBm~+10dBm（8µW~10mW） | |
| Optical Interface | 9/125µm single-modefiber(FC/PC) | |
| Optical interface return loss | >35dB | |
| Trigger Indicator | Trigger Logic level | TTL |
| External trigger | Support wavelength and power synchronization trigger（1Hz~1kHz） | |
| Internal trigger | Support internal trigger frequency setting（1Hz~1kHz） |