Phase Shifted Fiber Bragg Grating FBG Narrowband DK Photonics 1510-1590nm

Name: Phase Shifted Fiber Bragg Grating FBG Narrowband DK Photonics 1510-1590nm
Brand: DK Photonics
Availability: InStock

Description

Phase Shifted Fiber Bragg Grating (FBG) by DK Photonics

The Phase Shifted Fiber Bragg Grating (FBG) from DK Photonics is a highly specialized optical component designed for advanced fiber optic applications. Unlike standard FBGs, the phase shifted variant introduces a precise phase shift within the grating structure, resulting in an ultra-narrow transmission window embedded within the broader reflection spectrum. This unique characteristic makes it an essential element in applications requiring high spectral selectivity and stability.

Phase shifted FBGs are widely used in dense wavelength division multiplexing (DWDM) systems, fiber lasers, and optical sensing technologies. The narrow transmission band, typically around 0.05 nm, enables these gratings to act as ultra-selective filters or as key components in single-frequency fiber lasers. Their ability to maintain performance over a broad range of environmental conditions is further enhanced by athermal packaging, which minimizes wavelength drift due to temperature fluctuations.

DK Photonics’ phase shifted FBGs are engineered to deliver high reflectivity—ranging from 50% to 99%—across a customizable center wavelength spectrum from 1510 nm to 1590 nm. This flexibility allows seamless integration into a variety of optical systems, supporting both research and industrial requirements. The robust design and precise manufacturing ensure long-term reliability and consistent optical performance, making these FBGs a preferred choice for demanding photonics applications.

Specifications

Center Wavelength Range:	1510 – 1590 nm
FBG Length:	Not Specified
Reflectivity:	30 - 99%
Reflectivity:	50-99%
Transmission Bandwidth (nm):	0.05 (typical)

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Features

Ultra-Narrow Transmission Band: Features a very narrow transmission band within the reflection bandwidth, ideal for high-precision filtering applications.
Wide Center Wavelength Range: Available in center wavelengths from 1510 nm to 1590 nm, suitable for various telecom and sensing applications.
High Reflectivity: Offers reflectivity options from 50% up to 99%, ensuring optimal performance for different system requirements.
Typical Transmission Bandwidth: Delivers a typical transmission bandwidth of 0.05 nm, enabling high spectral resolution.
Athermal Packaging Available: Optional athermal packaging ensures stable performance across a wide temperature range.
Low Insertion Loss: Engineered for minimal insertion loss, maximizing signal integrity and system efficiency.
Customizable Specifications: Can be tailored to meet specific wavelength, bandwidth, and reflectivity requirements.
Reliable and Durable: Manufactured with high-quality materials for long-term reliability in demanding environments.
Applications: Perfect for use in fiber lasers, optical sensing, telecommunications, and wavelength filtering systems.
RoHS Compliant: Environmentally friendly and compliant with international safety standards.

Applications

Ultra-Narrow Linewidth Fiber Lasers: Phase shifted FBGs are essential for constructing single-frequency fiber lasers, providing ultra-narrow transmission windows for stable and precise laser output.
Optical Sensing Systems: Used in high-resolution fiber optic sensors for strain, temperature, and pressure measurements, especially where narrow spectral features are required.
Wavelength Locking and Stabilization: Ideal for stabilizing the wavelength of diode lasers and fiber lasers by providing a precise reference transmission peak.
Dense Wavelength Division Multiplexing (DWDM): Employed as ultra-narrow bandpass filters in DWDM systems to separate closely spaced optical channels, enhancing channel isolation and system capacity.
Optical Coherent Communication: Used in coherent optical communication systems for filtering and channel selection due to their sharp transmission characteristics.
Optical Signal Processing: Applied in advanced photonic circuits for filtering, delay lines, and phase-sensitive signal processing.
Microwave Photonics: Utilized in microwave photonic filters and signal generation systems, leveraging the narrow transmission window for high-frequency applications.
Laser Cavity Mode Selection: Enables selection and stabilization of specific longitudinal modes within laser cavities, improving spectral purity and coherence.
Quantum Optics and Quantum Communication: Provides narrowband filtering for quantum key distribution (QKD) and single-photon sources, ensuring high signal-to-noise ratios.
Biomedical Imaging and Spectroscopy: Used in optical coherence tomography (OCT) and other biomedical imaging systems requiring precise wavelength filtering.
Metrology and Spectral Analysis: Supports high-precision wavelength referencing and spectral analysis in scientific instrumentation.
Environmental and Structural Monitoring: Integrated into distributed sensing networks for real-time monitoring of infrastructure, pipelines, and environmental conditions.

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Frequently Asked Questions

What is a Phase Shifted Fiber Bragg Grating (FBG)?

A Phase Shifted Fiber Bragg Grating (FBG) is a type of optical fiber component that introduces a phase shift within the grating structure, resulting in a very narrow transmission band within its reflection bandwidth. This makes it ideal for applications requiring precise wavelength filtering, such as in fiber lasers and optical sensing.

What are the main applications of Phase Shifted FBGs?

Phase Shifted FBGs are commonly used in narrow-linewidth fiber lasers, distributed feedback (DFB) lasers, optical sensing, and telecommunications. Their narrow transmission bandwidth makes them suitable for wavelength stabilization and filtering in high-performance optical systems.

What are the key specifications of DK Photonics Phase Shifted FBG?

The DK Photonics Phase Shifted FBG features a center wavelength range of 1510 to 1590 nm, reflectivity between 50% and 99%, and a typical transmission bandwidth of 0.05 nm. Athermal packaging options are also available for enhanced stability.

How does a Phase Shifted FBG differ from a standard FBG?

Unlike standard FBGs, which reflect a broad wavelength range, Phase Shifted FBGs introduce a phase shift in the grating, creating a narrow transmission window within the reflection band. This allows for more precise wavelength selection and is essential for applications like single-frequency lasers.

What is the advantage of an athermal packaged Phase Shifted FBG?

An athermal packaged Phase Shifted FBG is designed to minimize wavelength shifts caused by temperature changes, ensuring stable performance in varying environmental conditions. This is particularly important for applications that require high wavelength stability.

Can the center wavelength of the Phase Shifted FBG be customized?

Yes, DK Photonics offers customization of the center wavelength within the 1510 to 1590 nm range to meet specific application requirements. Customers can request specific wavelengths based on their system needs.

What is the typical transmission bandwidth of the DK Photonics Phase Shifted FBG?

The typical transmission bandwidth of the DK Photonics Phase Shifted FBG is 0.05 nm, which allows for highly selective wavelength filtering and is ideal for applications requiring narrow linewidths.

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