Tehcwin CKSF-D-EY-M Erbium & Yetterbium Co-doped Fiber with Narrow Linewidth (<10kHz) and Low Phase Noise, Low Relative Intensity Noise (RIN) Single Frequency Fiber Laser for Coherent Optical Fiber Communications
Techwin CKSF-D is a low-noise Single Frequency Fiber Laser based on Distributed Feedback Bragg Grating (DFB) technology. It has independent intellectual property rights and achieves a stable single-frequency laser output with single longitudinal mode, linear polarization, and narrow linewidth. CKSF-D has very low phase and frequency noise and low relative intensity noise (RIN). Techwin uses unique packaging technology to ensure low-noise DFB single frequency fiber lasers with excellent wavelength stability.
Techwin uses extra-cavity technology to significantly suppress the relative intensity noise (RIN) of the DFB single frequency fiber laser, ensuring that the resonant cavity of the single frequency fiber laser is not disturbed. Please refer to CKSF-D-RS series products.
CKSF-D narrow linewidth single frequency fiber laser module has a small size, a sturdy package, strong resistance to environmental interference, and an output power of more than 100mW. CKSF-D-EY-M is based on Erbium & Yetterbium co-doped fiber with narrow linewidth (<10kHz) and low phase noise, low relative intensity noise (RIN). The standard wavelength is 1550.12nm, and the optional wavelength range is 1530-1570nm, such as the standard wavelength under the ITU framework. Other wavelengths can be customized according to requirements.
Coherent optical fiber communications were studied extensively in the 1980s mainly because of the high sensitivity of coherent receivers that could enhance the unrepeated transmission distance ; however, since 1990, related research and development had been interrupted by the rapid advances in high-capacity wavelength-division multiplexed (WDM) systems, which employed the conventional intensity-modulation and direct-detection (IM·DD) scheme as well as the newly developed erbium-doped fiber amplifier (EDFA) to compensate for span loss of the link. In 2005, the demonstration of digital carrier-phase estimation in coherent receivers led to the renewal of widespread interest in coherent optical communications. The reason is that the digital coherent receiver enables us to employ a variety of spectrally efficient modulation formats such as M-ary phase-shift keying and quadrature-amplitude modulation (QAM), relying upon stable carrier-phase estimation in the digital domain. In addition, because the phase information is preserved after detection, we can equalize linear transmission impairments such as group-velocity dispersion (GVD) and polarization-mode dispersion (PMD) of transmission fibers via digital signal processing(DSP).
Techwin is known as an expert company in developing and manufacturing of fiber lasers, fiber amplifiers and fiber sources. We also strive to provide our customers with custom fiber laser solutions suited for your applications. All of our high-power fiber lasers and amplifiers are manufactured following a rigorous quality management system. We are more than happy to share our laser technology with worldwide customers, and committed to earn the ongoing trust of our customers with our industrial fiber lasers coupled with expert support and service in various industrial segments.