Embedded Files
Need more information?
COMPANY
COMPANY
Q: What is LD4B?
A: LD4B is a photonics company specializing in fiber-coupling of semiconductor laser diodes, superluminescent diodes (SLDs), and photodiodes. We design and manufacture advanced fiber-coupled laser and detector modules that deliver high performance and reliability.
Q: Where are LD4B products used?
A: LD4B products are widely used in microwave photonics, optical time-domain reflectometry, telecommunications, datacom, fiber sensing, medical equipment, and scientific research.
Q: What does LD4B mean?
A: LD4B stands for “Laser Diode for Business.” The name reflects our focus on providing high-quality optoelectronic solutions. While our roots are in laser diodes, we also manufacture superluminescent diodes (SLDs) and photodiodes, all with advanced fiber-coupling technology.
Q: Who works at LD4B?
A: LD4B is driven by a team of engineers and scientists passionate about photonics. Our expertise covers precise optical fiber alignment and the manufacturing of reliable fiber-coupled laser diodes, superluminescent diodes (SLDs), and photodiodes.
Q: Where is LD4B located?
A: LD4B is located in Warsaw, Poland. Our facility at ul. Konstruktorska 6, lokal 108, 02-673 Warsaw manufactures fiber-coupled laser diodes, superluminescent diodes (SLDs), and photodiodes for customers worldwide.
PRODUCTS
PRODUCTS
Q: What are fiber-coupled laser diodes?
A: Fiber-coupled laser diodes are semiconductor lasers that emit coherent light directly into an optical fiber. They simplify the integration of lasers into optoelectronic systems, providing precise, stable, and efficient light delivery for applications in telecommunications, sensing, and industrial laser systems.
Q: What laser diodes does LD4B offer?
A: LD4B offers fiber-coupled laser diodes with wavelengths from 500 nm to 1650 nm. Most of our diodes are coupled to single-mode or polarization-maintaining fibers, delivering tens of milliwatts of optical power from the fiber for high-precision applications in industrial photonics.
Q: Does LD4B offer telecom laser diodes?
A: Yes, LD4B offers telecom-grade laser diodes suitable for analog and digital optical communication. Our products include DFB laser diodes capable of data rates up to 2.5 Gbps or 10 Gbps, optimized for high-speed fiber-optic networks.
Q: Which optical fibers does LD4B couple light to?
A: LD4B specializes in coupling light to single-mode and polarization-maintaining fibers with core diameters from 3 to 10 µm. We also provide fiber coupling for multimode fibers with core sizes of 50 µm, 62.5 µm, and 105 µm if it is required for specific application.
Q: What are superluminescent diodes (SLDs)?
A: Superluminescent diodes (SLDs) are broadband, incoherent light sources. Their emission spectrum is similar to LEDs, but they are more directional and can be efficiently coupled into optical fibers, making them ideal for fiber-optic sensing, imaging, and high-precision photonics applications.
Q: What superluminescent diodes does LD4B offer?
A: LD4B offers fiber-coupled superluminescent diodes (SLDs) with wavelengths ranging from 670 nm to 1550 nm and optical powers of a few milliwatts.
Q: What are photodiodes?
A: Photodiodes are optoelectronic devices that convert light into electrical current. They are widely used in fiber-optic communication, sensing, and measurement systems for high-speed and precise optical detection.
Q: What photodiodes does LD4B offer?
A: LD4B offers PIN photodiodes, avalanche photodiodes (APDs), and photodiodes with integrated transimpedance amplifiers (TIA). These photodiodes are designed for high-speed optical detection in microwave photonics, OTDR, digital communication, fiber-optic sensing and security applications.
Q: What is the difference between Fabry-Perot and DFB laser diodes?
A: A DFB (Distributed Feedback) laser diode is a single-frequency laser with a narrow linewidth and a single spectral peak. A Fabry-Perot (FP) laser diode has no frequency-selective element, producing a wider spectrum with multiple modes.
Q: What is the linewidth of a DFB laser diode?
A: The linewidth of a DFB laser diode is typically less than 1 MHz, making it too narrow to measure with standard grating-based optical spectrum analyzers. Specialized techniques, such as the self-delayed heterodyne method, are required for accurate linewidth measurement.
Report abuse