Description

The 1.5µm High Power Chirped Fiber Bragg Grating (FBG) by Connet is a premium optical component designed to meet the demands of high-performance laser systems operating at 1550nm. Written in specialty double-clad optical fibers, this chirped fiber Bragg grating leverages advanced fabrication techniques to ensure high precision, low thermal drift, and excellent reflectivity. Ideal for both continuous wave (CW) and pulsed high-power fiber lasers, this 1.5um FBG is tailored to applications where stability, mode control, and thermal handling are critical.

The product is optimized for use with single-mode and large mode area (LMA) fibers, featuring handling capacity of up to 50W pump power. Offered exclusively in recoated form, the grating is available in multiple bandwidths and reflectivity configurations to meet specific laser cavity requirements. Its outstanding optical performance and reliability make it an essential element in today’s industrial, medical, and scientific fiber laser systems.

Connet can provide various bandwidths and accurately matched high and low reflectivity gratings for different applications.

Specifications

Center Wavelength Range: 1530 – 1605 nm
FBG Length: Custom
Reflectivity: >1%, >90%
Typical Central Wavelength: 1550, 1560 nm
Tolerance On Central Wavelength: 1 nm
Type Of Reflector: HR/LR
Peak Reflectivity 2: >99.5/10±2 %
FWHM (­-3dB): 0.5~3/0.1~1 nm
Side Mode Suppression Ratio: 20/10 dB
Wavelength Mismatch (LR To HR): 0.2 nm
Fiber Type: SM-1550-GDF
Power Handling Of Pump: 50 W
Input/output Fiber Length: 1 m
Package Type: Recoated Only

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

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Features

  • Extremely low temperature slope
  • High conversion efficiency
  • High power handling
  • Outstanding reliability
  • Wide variety of fiber types
  • High-precision chirped fiber Bragg grating designed for 1.5µm wavelength range
  • Peak reflectivity >99.5% (HR) and ~10% (LR) for cavity optimization
  • Bandwidth range from 0.5nm to 3nm for flexible spectral control
  • Wavelength options include 1550nm and 1560nm (customizable)
  • Compact and durable recoated fiber design
  • Excellent thermal stability and low temperature slope
  • Engineered for single-mode and LMA fibers (SM-1550-GDF)
  • High side mode suppression ratio for spectral purity

Applications

  • High power fiber laser
  • Pulsed fiber laser
  • High power fiber lasers operating at 1.5µm
  • Pulsed laser systems in telecommunications and sensing
  • Eye-safe laser sources for LIDAR and rangefinding
  • Laser cavities requiring stable reflection and dispersion management
  • OEM fiber laser modules and integration
  • Medical and environmental laser applications
  • Spectroscopy systems using 1.5µm sources

Frequently Asked Questions

What is the main use of this 1.5um chirped fiber Bragg grating?
It serves as a high-efficiency cavity reflector for 1.5µm high-power fiber lasers, supporting both CW and pulsed configurations.
Which central wavelengths are supported?
Standard options include 1550nm and 1560nm, with ±1nm tolerance. Other wavelengths are available on request.
What is the maximum pump power this FBG can handle?
This 1.5um FBG is rated to handle pump power up to 50W.
What fiber type is used with this product?
It is designed for SM-1550-GDF (9/125 µm, NA=0.12/0.46), but other types can be requested.
Can I get a custom reflectivity or bandwidth specification?
Yes, Connet supports custom reflectivity levels and bandwidths based on application requirements.
What is the available packaging format?
The grating is available in a recoated configuration only. Metal housing is not supported for this version.
What advantages does chirped FBG offer in fiber lasers?
Chirped FBGs allow for dispersion compensation and pulse shaping, enhancing spectral control and improving laser performance.

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

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