JAPANESE / ENGLISH
JAPANESE / ENGLISH
Last updated on 03/3/2024
Fiberlabs Inc., a leading manufacturer of O-band fiber amplifiers offering the most reliable and highest output power Praseodymium-Doped Fiber Amplifier (PDFA) ( Blog > O-band PDFA achieves 500-mW output), has started offering a wideband BDFA at O-band.
Recently, O-band amplifiers have attracted a lot of interest due to the rapid growth of network traffic demand. Among O-band amplifiers, a Bismuth-Doped Fiber Amplifier (BDFA) is one of the most attractive configurations because of its wide working wavelength range.
A single-frequency light from a tunable laser source is amplified by the BDFA, and the output from the BDFA is measured by an optical spectrum analyzer (figure 1). As can be seen from the measurement results shown in figure 2 and 3, our new BDFA has been found to achieve a high gain of 21 dB from a 0-dBm input at 1310 nm. In particular, the gain bandwidth is extremely wide, which is advantageous for a number of applications such as CWDM4 signal amplification.
Figure 1: Measurement setup of Gain and NF of the BDFA.
Figure 2: Gain/noise figure vs wavelength.
Figure 2: Gain/NF/output power vs. input power @1310 nm.
We conducted an additional experiment to see its CWDM4 amplification performance. The amplification was evaluated using four signals (0dBm/ch) that were simultaneously launched to the amplifier as the input signal. The launched and amplified spectra are shown in Fig.4, demonstrating that the CWDM4 signals were simultaneously amplified with more than 10dB gain and less than 4dB gain deviation. These advantages of our BDFA would not be limited for the CWDM4 amplification, and it has great potential to fill the wavelength gap that cannot be reached by rare-earth-doped fibers.
Figure 3: Amplification characteristics for CWDM4 signal.
Thank you for your interest in our BDFA. Because BDFA is a relatively new and rare-earth-free technology, its full potential across various applications is still being discovered. We believe that exploring its full capabilities is essential to unlock its many advantages. We encourage you to test our demo unit to see firsthand how BDFA can be integrated into your systems and deliver superior performance. We are grateful for your contact and inquiry about our BDFA.