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Description

Multi-Channel Superluminescent Diode Light Source (Multi-SLED)

The Multi-Channel Superluminescent Diode Light Source, or Multi-SLED, by DAYY Photonics is a state-of-the-art broadband light source designed to operate within the near-infrared region. This compact and fully enclosed Integrated Spectral Bench (ISB2) is engineered with DAYY’s proprietary 32-pin butterfly package. It features a sophisticated assembly of superluminescent diodes, each paired with a monitor diode to enhance power control and monitoring capabilities. The inclusion of an integrated isolator, thermoelectric cooler (TEC), and driver circuit ensures overlapping spectral coverage, providing users with complete control over up to six enclosed light sources.

The ISB2 is designed to offer a seamless user experience, allowing for precise temperature control via remote devices such as PCs or laptops, or through the convenient dip switches located on the side of the bench. With its capability to connect through USB, RS-232, or Ethernet, the ISB2 is both compact and user-friendly, making it an ideal choice for manufacturers requiring reliable light power in their assemblies. The device supports various spectral coverages, with SLEDs ranging from 770nm to 1680nm and delivering up to 40mW of optical power.

DAYY’s innovative spectral stitching technology is at the heart of the Multi-SLED, providing extensive spectral coverage by integrating multiple wavelengths into a single, spatially coherent beam. This technology ensures low temporal coherence and broad spectral coverage, allowing for the spectral tailoring of product lines to meet specific application needs.

The flexibility and usability of the Multi-SLED make it an exceptional choice for a wide range of applications, from industrial to biomedical imaging. With its robust design and advanced features, the Multi-SLED stands out as a versatile and powerful tool in the field of photonics.

DAYY Multi-SLED® ISB2: Compact Broadband Near-Infrared Light Source

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Specifications

SLED Type: Fiber Coupled, No Fiber Coupling
Operating Power (typical): 30 mW
Center Wavelength (typical): 1680 nm
Bandwidth (FWHM): 100 nm
Number Of SLEDs: 2 to 6
Fiber-coupled Output Power: 10mW to 40mW
Free Space Output Power: 30mW to 130mW
Bandwidth FWHM: 40nm to 460nm
Spectral Coverage Range: 770nm to 1680nm
Optical Power: up to 40mW
Communication Interfaces: USB, RS-232, Ethernet
Isolator: Broadband Dual Stage PMF Isolator (35dB)

Got questions about specs? Use the inquiry form to ask.

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Features

  • Compact and Versatile Design: The Multi-Channel Superluminescent Diode Light Source (Multi-SLED) is a compact broadband light source operating within the near-infrared region, housed in a fully enclosed Integrated Spectral Bench (ISB2).
  • Multiple SLEDs: Accommodates between two and six superluminescent diodes (SLEDs) in a single unit, each with independent monitor diodes for enhanced power control and monitoring.
  • Wide Power Range: SLEDs can be operated from 0-100% of their maximum rating, with fiber-coupled output power ranging from 10mW to 40mW and free space output power from 30mW to 130mW.
  • Broad Bandwidth: Bandwidth Full Width at Half Maximum (FWHM) ranges from 40nm to 460nm, providing extensive spectral coverage.
  • Advanced Spectral Stitching: Utilizes DAYY’s proprietary technology for spectral stitching, ensuring optimal power and bandwidth.
  • Multiple Communication Interfaces: Offers USB, RS-232, and Ethernet interfaces for versatile connectivity options.
  • Temperature Control: Users can control the temperature remotely via a PC or laptop, or manually using dip switches on the bench.
  • High Coupling Efficiency: Internally optimized for maximum coupling efficiency with single mode or polarization-maintaining (PM) fiber.
  • Integrated Isolator: Features a monolithic integration of a Broadband Dual Stage PMF Isolator with 35dB isolation.
  • User-Friendly Interface: Comes with a user-friendly GUI and custom API for test automation, enhancing usability and flexibility.
  • Applications: Ideal for optical component testing, telecom test equipment, medical and industrial optical coherence tomography, and more.
  • Ordering Information: Light type ordering option available as #DAY-ISB2-PB_2025_01_01.

Applications

  • Optical Coherence Tomography (OCT): Broadband near-infrared Multi-SLED light source for medical OCT, ophthalmic OCT, dermatology imaging, dental OCT, cardiovascular OCT, and endoscopic OCT systems requiring low temporal coherence, high brightness, and stable fiber-coupled output.
  • Industrial Optical Coherence Tomography: High-bandwidth SLED illumination for non-contact inspection, inline metrology, defect detection, coating thickness measurement, material characterization, and quality control in manufacturing environments.
  • Optical Component Testing: Broadband NIR light source for testing filters, isolators, couplers, splitters, fiber Bragg gratings, arrayed waveguide gratings, lenses, photonic integrated circuits, and other passive or active optical components.
  • Telecommunications Test and Measurement: Multi-channel superluminescent diode source for telecom component characterization, wavelength-dependent loss testing, fiber network diagnostics, optical return loss measurements, and broadband optical bench testing.
  • Fiber Optic Sensor Interrogation: Stable broadband source for interrogating fiber optic sensors, including fiber Bragg grating sensors, distributed sensing systems, strain sensors, temperature sensors, pressure sensors, and structural health monitoring networks.
  • Biomedical Imaging Systems: Near-infrared broadband illumination for tissue imaging, low-coherence interferometry, spectroscopy-assisted imaging, vascular imaging, and research-grade biomedical diagnostic platforms.
  • Low-Coherence Interferometry: Broadband SLED source for precision distance measurement, surface profiling, thickness gauging, optical path length measurement, and coherence-domain reflectometry applications.
  • Spectroscopy and Spectral Analysis: Wide spectral coverage from 770 nm to 1680 nm for near-infrared spectroscopy, absorption measurements, reflectance spectroscopy, transmission testing, and broadband spectral characterization.
  • Hyperspectral and Multispectral Imaging: Spectrally stitched Multi-SLED output for broadband NIR illumination in imaging systems used for material identification, biological sample analysis, agricultural inspection, and machine vision research.
  • Photonic Integrated Circuit Testing: Broadband fiber-coupled light source for wafer-level and packaged PIC testing, including waveguide loss measurement, grating coupler characterization, resonator testing, and broadband photonic device evaluation.
  • Optical Frequency Domain Reflectometry and Reflectometry Testing: Low-coherence broadband light source for reflectometry setups used to locate reflections, characterize optical assemblies, and analyze fiber optic links.
  • Polarization-Maintaining Fiber Applications: PM fiber-compatible broadband source for polarization-sensitive measurements, PM component testing, interferometry, OCT, and optical system alignment.
  • Laboratory Research and Development: Compact multi-channel SLED source for university, government, and industrial photonics laboratories requiring adjustable optical power, broad bandwidth, and computer-controlled operation.
  • Automated Optical Test Systems: USB, RS-232, and Ethernet-controlled broadband light source for integration into automated test stations, production test benches, and custom measurement platforms using GUI or API-based control.
  • Metrology and Precision Measurement: Broadband near-infrared source for optical metrology, dimensional measurement, layer thickness analysis, surface inspection, and calibration of optical measurement instruments.
  • Optical Sensor Development: Flexible Multi-SLED platform for developing and testing NIR optical sensors, biosensors, chemical sensors, environmental sensors, and integrated photonic sensing modules.
  • Near-Infrared Illumination for Machine Vision: Stable NIR broadband illumination for industrial machine vision, inspection of semiconductors, polymers, coatings, composites, and materials that benefit from near-infrared contrast.
  • Semiconductor and Wafer Inspection: Broadband NIR light source for non-destructive inspection, layer analysis, defect detection, and optical characterization of semiconductor wafers and microfabricated devices.
  • Material Characterization: Multi-wavelength SLED illumination for analyzing optical properties of plastics, glass, coatings, biological tissues, ceramics, thin films, and composite materials.
  • Free-Space Optical Testing: Free-space broadband output for optical alignment, lens testing, imaging bench illumination, detect

Frequently Asked Questions

What is the DAYY ISB2 Multi-SLED broadband light source?
The DAYY ISB2 Multi-SLED is a compact, integrated multi-channel superluminescent diode light source for the near-infrared range. It combines 2 to 6 SLEDs in a fully enclosed spectral bench with monitor photodiodes, an integrated isolator, thermoelectric cooling, and driver electronics to deliver broad, overlapping spectral coverage from approximately 770 nm to 1680 nm.
What wavelength range and bandwidth does the Multi-SLED light source support?
The ISB2 Multi-SLED can be configured with SLED wavelengths spanning roughly 770 nm to 1680 nm. Depending on the selected SLED combination, the full width at half maximum bandwidth can range from about 40 nm to 460 nm, making it suitable for broadband near-infrared applications such as OCT, optical testing, and telecom component characterization.
How much optical output power does the DAYY Multi-SLED provide?
The Multi-SLED provides fiber-coupled output power from 10 mW to 40 mW and free-space output power from 30 mW to 130 mW, depending on configuration. Each SLED channel can be operated from 0% to 100% of its maximum rating, allowing users to balance power, spectrum shape, and application requirements.
How does spectral stitching work in a multi-channel SLED source?
Spectral stitching combines the output spectra of multiple superluminescent diodes into one broad, overlapping spectral output. In the DAYY Multi-SLED, this creates a single spatially coherent beam with low temporal coherence and expanded spectral bandwidth, which is especially valuable for optical coherence tomography, broadband component testing, and imaging systems.
What are the main applications of the ISB2 Multi-SLED light source?
The ISB2 Multi-SLED is designed for optical component testing, telecom test equipment, medical optical coherence tomography, industrial OCT, biomedical imaging, and manufacturer assemblies that require compact broadband near-infrared light. Its broad spectrum, controllable channels, and stable output make it useful in both R&D and integrated OEM systems.
What control and communication options are available for the Multi-SLED?
The ISB2 can be controlled through USB, RS-232, or Ethernet interfaces. Users can adjust SLED output levels and temperature settings remotely from a PC or laptop, and the system also supports control via side dip switches. A user-friendly GUI and custom API are available for automated test setups and OEM integration.
Does the DAYY Multi-SLED support fiber-coupled output and polarization-maintaining fiber?
Yes. The ISB2 is internally optimized for high coupling efficiency with single-mode or polarization-maintaining fiber. It also includes a monolithically integrated broadband dual-stage PMF isolator with 35 dB isolation, helping improve stability and reduce unwanted optical feedback in precision measurement and imaging systems.

Got more questions? Use the inquiry form to ask the supplier directly.

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