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Description

The Fiber Bragg Grating (FBG) Wavelength Locker is an advanced optical component designed to ensure precise wavelength stabilization for pump laser diodes, particularly in demanding environments where temperature fluctuations can impact laser performance. By leveraging the unique reflective properties of FBGs, this device effectively locks the emission wavelength of pump lasers, maintaining their stability and intensity across a range of operating conditions. This is especially critical in applications such as Erbium-Doped Fiber Amplifiers (EDFA), Dense Wavelength Division Multiplexing (DWDM) systems, and fiber optic sensing networks, where signal integrity and channel stability are paramount.

Unlike conventional wavelength stabilization methods, the FBG Wavelength Locker offers extremely low temperature and polarization dependence, ensuring consistent performance even in variable or harsh environments. Its low reflectivity design minimizes insertion loss while providing high locking accuracy, making it suitable for both single and double FBG configurations based on specific customer requirements. The periodic locking capability covers all ITU-T Grid standard channels, making it a versatile solution for network monitoring, tunable laser modules, and Raman system in-fiber resonators.

The device is engineered for compatibility with a wide range of fiber types, including HI1060, HI980, PM980, and SMF-28e, and is available with various recoating options such as acrylate, polyimide, or custom coatings to suit different deployment scenarios. With a robust tensile strength exceeding 100 kpsi and customizable pigtail lengths and optical connectors, the FBG Wavelength Locker is designed for seamless integration into both new and existing optical systems. Its high signal-to-leakage ratio and narrow bandwidth further enhance its suitability for precision optical applications, ensuring reliable wavelength stabilization for next-generation photonic networks.

Fiber Bragg Grating Wavelength Locker

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Specifications

Center Wavelength Range: 940 – 1070 nm
FBG Length: Not Specified
Reflectivity: >1%
Center Wavelength: 940, 972-978, 1064, 1070 nm
Wavelength Tolerance: +/-0.25 nm
Bandwidth (FWHM): >0.02 nm
SLSR: >10 dB
FBG Recoating: None, Acrylate, Polyimide, or Custom
Tensile Strength: >100 kpsi
Fiber Type: HI 1060, HI1060flex, HI 980, PM980 or SMF-28e
Pigtail Length: 1m (Typical), or Custom
Optical Connector: Bare Fiber, FC/APC, SC/APC, or Custom

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

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Features

  • High Wavelength Locking Accuracy: Ensures precise stabilization of pump laser wavelength, meeting ITU-T Grid standards for DWDM systems.
  • Extremely Low Temperature Dependence: Maintains stable performance and wavelength locking across a wide range of operating temperatures.
  • Low Polarization Dependence: Delivers consistent results regardless of polarization state, ideal for demanding optical applications.
  • Periodic Locking Across All Channels: Supports multi-channel systems with reliable wavelength stabilization for each channel.
  • Flexible Configuration: Available in single or double FBG configurations to meet specific wavelength locking requirements.
  • Wide Center Wavelength Range: Options include 940 nm, 972–978 nm, 1064 nm, and 1070 nm to suit various laser sources.
  • Ultra-Narrow Bandwidth: Full Width at Half Maximum (FWHM) bandwidth greater than 0.02 nm for precise filtering.
  • High Side Lobe Suppression Ratio (SLSR): SLSR greater than 10 dB for superior signal clarity.
  • Customizable Reflectivity: Low reflectivity (>1%) tailored for wavelength locker applications.
  • Robust Mechanical Strength: Tensile strength over 100 kpsi ensures durability and reliability in deployment.
  • Versatile Fiber and Coating Options: Compatible with HI1060, HI1060flex, HI980, PM980, or SMF-28e fibers; recoating options include None, Acrylate, Polyimide, or custom solutions.
  • Customizable Pigtail Length and Connectors: Standard 1 m pigtail or custom lengths; connector options include Bare Fiber, FC/APC, SC/APC, or custom types.
  • Ideal for Multiple Applications: Perfect for EDFA pump lasers, DFB laser stabilization in WDM systems, tunable laser modules, and Raman system in-fiber resonators.
  • Reliable Performance for Network Monitoring and Fiber Sensing: Designed for critical telecom and sensing environments requiring stable and accurate wavelength control.

Applications

  • EDFA Pump Laser Stabilization
    Fiber Bragg Grating (FBG) wavelength lockers are widely used to stabilize the wavelength and intensity of pump lasers in Erbium-Doped Fiber Amplifiers (EDFA), ensuring optimal performance and reliability in optical communication systems.
  • DFB Laser Stabilization for WDM Systems
    FBG wavelength lockers are essential for stabilizing Distributed Feedback (DFB) lasers in Wavelength Division Multiplexing (WDM) systems, maintaining precise channel spacing and reducing wavelength drift.
  • Tunable Laser Module Stabilization
    Used in tunable laser modules, FBG wavelength lockers help maintain stable output wavelengths, which is critical for dynamic reconfigurable optical networks and advanced photonic applications.
  • Raman System In-Fiber Resonators
    FBGs serve as wavelength-selective elements in Raman amplification systems, providing feedback and stabilization for in-fiber resonators and enhancing system efficiency.
  • Dense Wavelength Division Multiplexing (DWDM) Channel Stabilization
    FBG wavelength lockers stabilize laser sources to ITU-T Grid standard wavelengths, ensuring channel integrity and minimizing crosstalk in DWDM networks.
  • Optical Network Monitoring
    Integrated into network monitoring systems, FBGs enable real-time wavelength referencing and fault detection, improving network reliability and maintenance.
  • Fiber Optic Sensing Systems
    FBGs are used in fiber optic sensors for temperature, strain, and pressure measurements, providing high accuracy and stability in industrial, civil, and structural health monitoring applications.
  • Laser Wavelength Reference
    FBGs provide a stable wavelength reference for calibration and testing of optical components and systems in research and manufacturing environments.
  • Medical Laser Stabilization
    Used in medical laser systems, FBG wavelength lockers ensure consistent laser output for precise surgical and diagnostic procedures.
  • Quantum Communication Systems
    FBGs are utilized for wavelength stabilization in quantum key distribution and other quantum communication applications, where precise wavelength control is critical.

Frequently Asked Questions

What is a Fiber Bragg Grating (FBG) Wavelength Locker?
A Fiber Bragg Grating (FBG) Wavelength Locker is an optical component used to stabilize the wavelength and intensity of pump laser diodes, particularly in EDFA (Erbium-Doped Fiber Amplifier) systems. It ensures that the laser operates at a fixed wavelength, typically aligned with ITU-T Grid standards in DWDM (Dense Wavelength Division Multiplexing) systems, by reflecting a specific wavelength back to the laser for feedback and control.
How does the FBG Wavelength Locker improve laser stability?
The FBG Wavelength Locker stabilizes the laser by reflecting a precise wavelength back to the laser diode, allowing for real-time feedback and correction of wavelength drift caused by temperature changes or other environmental factors. This results in high wavelength locking accuracy, low temperature dependence, and low polarization dependence, ensuring consistent laser performance.
What are the main applications of the FBG Wavelength Locker?
The FBG Wavelength Locker is primarily used for stabilizing EDFA pump lasers, DFB (Distributed Feedback) lasers in WDM systems, tunable laser modules, and Raman system in-fiber resonators. It is essential in optical communication networks, network monitoring, and fiber sensor applications where precise wavelength control is critical.
What center wavelengths are available for the FBG Wavelength Locker?
The FBG Wavelength Locker is available in center wavelengths of 940 nm, 972-978 nm, 1064 nm, and 1070 nm. Custom wavelengths may also be available upon request to meet specific application requirements.
What fiber types and recoating options are supported?
The FBG Wavelength Locker supports various fiber types, including HI1060, HI1060flex, HI980, PM980, and SMF-28e. Recoating options include None, Acrylate, Polyimide, or custom coatings to suit different environmental and mechanical requirements.
Can the FBG Wavelength Locker be customized for specific applications?
Yes, the FBG Wavelength Locker can be customized in terms of center wavelength, pigtail length, fiber type, recoating, and optical connector type (Bare Fiber, FC/APC, SC/APC, or custom) to meet the unique needs of different optical systems and integration requirements.
How does the FBG Wavelength Locker compare to other wavelength stabilization solutions?
Compared to other wavelength stabilization methods, the FBG Wavelength Locker offers high locking accuracy, extremely low temperature and polarization dependence, and periodic locking that covers all channels. This makes it a reliable and efficient solution for maintaining stable laser operation in demanding optical communication and sensing applications.

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

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