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Description

The laser diode to fiber couplers from OZ Optics come in a compact and rugged package, offering optimal coupling efficiency. They can be purchased prealigned, with the diode already installed, or as a kit for customer assembly using their own diode. The assembly process is straightforward and can be completed in less than twenty minutes. A complete alignment kit, including tools and video instructions, is available separately.

These couplers are designed to work with various diode case sizes and wavelengths ranging from 400nm to over 2050nm. They are compatible with multimode, single mode, and polarization maintaining fibers. One advantage of the design is that if the diode fails, it can be easily replaced while reusing the rest of the optics, and the device can be realigned for optimal coupling.

There are two versions of tilt-adjustable laser diode to fiber couplers: receptacle style and pigtail style. The pigtail style couplers have the fiber pigtailed directly onto the coupler, providing higher coupling efficiencies, lower backreflection levels, and better stability. The output fiber can be terminated with different connectors as desired.

The couplers are available in different diameters, including standard 0.79" and larger 1.3" packages for improved coupling efficiencies and compatibility with larger diode case sizes. Smaller diameter options are also available for specific diode can sizes.

Optional features include couplers with built-in isolators to reduce backreflection effects, blocking screws to attenuate the output beam for precise power control, and couplers with polarizers or polarization rotators in the middle.

The product is offered with different part numbers and specifications, including wavelength, coupling efficiency, fiber type, and connector options. The specifications and ordering information for standard parts and custom parts are provided in the description.

Laser Diode to Fiber Coupler - Pigtail Style

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Specifications

Type: Other / Not Specified
Configuration: Other
Splitting Ratio: Other / Not specified
Wavelength: 1550 nm
Fiber Type: Single-mode (SM), Multi-mode (MM), PMI125/250, PMI80/165
Connector Type: Other / Not specified
Housing Material: Other / Not specified
Wavelength Range: 375 nm to 2050 nm
Fiber Types: Single mode, multimode, polarization maintaining
Standard Package Diameter: 0.79 inch
Large Package Diameter: 1.3 inch
Small Package Diameter: 0.59 inch
Miniature Package Diameter: 0.5 inch
Operating Temperature Range: -25°C to 60°C
Supported Diode Can Sizes: 5.6 mm, 9.0 mm, TO-3 (H1)

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

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Features

  • Wide Wavelength Compatibility: Supports laser diode wavelengths from 375nm to 2050nm, accommodating a broad range of applications.
  • Multiple Fiber Options: Compatible with single mode, multimode, and polarization maintaining fibers for maximum flexibility.
  • High Coupling Efficiency: Pigtail style design delivers superior coupling efficiency and low backreflection compared to receptacle style couplers.
  • Rugged and Compact Construction: Durable, vibration-tested housing ensures reliable performance in demanding environments.
  • Versatile Packaging: Available in multiple standard diameters (0.5", 0.59", 0.79", and 1.3") to fit a wide range of laser diode case sizes, including TO-3 and miniature packages.
  • Easy Diode Replacement: Innovative design allows for quick and simple diode replacement without discarding the optics, reducing maintenance costs.
  • Prealigned or Kit Options: Offered as prealigned assemblies or as kits for customer assembly, with optional alignment tools and video instructions.
  • Customizable Output Connectors: Output fiber can be terminated with various connector types to suit your system requirements.
  • Temperature and Vibration Resistant: Operates reliably from -25°C to 60°C, with higher temperature versions available upon request.
  • OEM Solutions Available: Special low-cost, miniature pigtail style couplers designed for OEM and high-volume applications.
  • Proven Performance: Trusted, field-proven design and manufacturing for consistent, high-quality results.

Applications

  • Fiber Optic Communications
    Enables efficient coupling of laser diodes to optical fibers for high-speed data transmission in telecommunications, data centers, and broadband networks.
  • Optical Alignment Systems
    Provides precise and stable laser-to-fiber alignment, essential for laboratory setups, photonics research, and automated optical assembly lines.
  • Process Control
    Integrates into industrial monitoring systems for real-time process feedback, laser-based manufacturing, and quality assurance applications.
  • Optical Sensor Applications
    Facilitates the delivery and collection of light in fiber optic sensors used for environmental monitoring, structural health diagnostics, and chemical detection.
  • Medical Apparatus
    Used in medical laser delivery systems, endoscopy, photodynamic therapy, and surgical instrumentation requiring precise light transmission.
  • Imaging Systems
    Supports high-resolution imaging applications such as confocal microscopy, fluorescence imaging, and machine vision by providing stable and efficient light coupling.
  • Test and Measurement Systems
    Essential for optical test benches, spectrometers, and metrology equipment where consistent and repeatable laser-to-fiber coupling is critical.
  • Optical Coherence Tomography (OCT) Systems
    Delivers reliable light coupling for OCT imaging in biomedical diagnostics, ophthalmology, and material inspection.
  • Laser-Based Instrumentation
    Integrates into scientific instruments such as interferometers, spectrophotometers, and tunable laser systems.
  • OEM Integration
    Ideal for original equipment manufacturers requiring compact, robust, and customizable laser-to-fiber coupling solutions for integration into commercial products.
  • Research and Development
    Supports experimental setups in universities and research institutes for photonics, quantum optics, and fiber laser development.
  • Environmental and Remote Sensing
    Used in distributed fiber optic sensing systems for temperature, strain, and acoustic monitoring in infrastructure, oil & gas, and geophysical applications.
  • Spectroscopy
    Enables efficient light delivery and collection for Raman, fluorescence, and absorption spectroscopy in analytical laboratories.
  • Laser Pumping
    Couples pump diodes to fiber lasers and amplifiers, ensuring high power transfer and stability in industrial and scientific laser systems.
  • Military and Aerospace
    Suitable for rugged environments in defense and aerospace applications, including secure communications and LIDAR systems.

Frequently Asked Questions

What is a laser diode to fiber coupler – pigtail style?
A laser diode to fiber coupler – pigtail style is an optical device designed to efficiently couple light from a laser diode into an optical fiber. The pigtail style features the fiber permanently attached (pigtailed) to the coupler, providing higher coupling efficiency, lower backreflection, and improved stability compared to receptacle style couplers.
What fiber types and wavelength ranges are supported by this coupler?
This laser diode to fiber coupler supports single mode, multimode, and polarization maintaining fibers, and is compatible with diode wavelengths from 375nm to over 2050nm, making it suitable for a wide range of optical applications.
What are the main applications for the pigtail style laser diode to fiber coupler?
The pigtail style laser diode to fiber coupler is used in fiber optic communications, optical alignment systems, process control, optical sensor applications, medical apparatus, imaging systems, test and measurement systems, and optical coherence tomography (OCT) systems.
How easy is it to assemble or replace the laser diode in this coupler?
The coupler can be purchased prealigned with the diode installed or as a kit for customer assembly. The assembly process is straightforward and can be completed in less than twenty minutes. If the diode fails, it can be easily replaced and the optics reused, with realignment for optimal coupling.
What are the available package sizes for the pigtail style coupler?
The pigtail style laser diode to fiber coupler is available in several package diameters: standard 0.79" for most laser diodes, 1.3" for larger diodes and best coupling efficiency, 0.59" for 9.0mm or smaller can sizes, and a miniature 0.5" diameter for diodes with can diameters of 5.6mm or less.
How does the pigtail style coupler perform under temperature and vibration?
Despite having tilt and locking screws, the pigtail style coupler is robust and can operate reliably over a temperature range of -25°C to 60°C. It has been vibration tested, and higher temperature versions are available upon request.
What are the advantages of the pigtail style over the receptacle style coupler?
The pigtail style coupler offers higher coupling efficiencies, lower backreflection, and better stability than receptacle style couplers. The direct fiber attachment minimizes losses and provides a more rugged and reliable connection for demanding applications.

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

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