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Fiber Bragg gratings (FBG) are basic components for a wide range of applications in the areas of telecommunications, lasers and sensors. With excellent apodized technologies, DK Photonics can offer high quality Fiber BRagg gratings (FBG) to meet different requirements from customers.
  • Center Wavelength Range: 1510 - 1590 nm
  • FBG Length: 15 mm, 10 mm, 5 mm, 3 mm
  • Reflectivity: >70%, >90%
Data Sheet
Fiber Bragg gratings are basic components for a wide range of applications in the areas of telecommunications, lasers and sensors. High temperature FBG can be used in very high temperature and harsh environment. With excellent apodized technologies, DK Photonics can offers customized high temperature FBG for different applications.
  • Center Wavelength Range: 1510 - 1590 nm
  • FBG Length: 10 mm
  • Reflectivity: >50%
Data Sheet
Long period grating couples light from a guided mode into forward propagating cladding modes where it is lost due to absorption and scattering. The coupling from the guided mode to cladding modes is wavelength dependent so we can obtain a spectrally selective loss. It is an optical fiber structure with the properties periodically ...
  • Center Wavelength Range: 1500 - 1600 nm
  • FBG Length: Not Specified
  • Reflectivity: >1%
Data Sheet
Phase shifted Fiber Bragg gratings (FBG) show a very narrow transmission band within its reflection bandwidth. DK Photonics can offer athermal packaged phase shifted FBG.
  • Center Wavelength Range: 1510 - 1590 nm
  • FBG Length: Not Specified
  • Reflectivity: 30 - 99%
Data Sheet
In the fiber to the home, when monitoring optical fiber transmitting communication lights, a wavelength of 1625nm or 1650 nm is used for maintenance testing and installed optical filters that allow the communication light to pass but that cut off the test light in the front of optical line terminals and optical network terminals. A ...
  • Center Wavelength Range: 1625 - 1650 nm
  • FBG Length: Not Specified
  • Reflectivity: 10 - 90%
Data Sheet
Fiber Bragg grating (FBG) Array is a series of Bragg gratings written on a single optical fiber. It can meet the requirements for long monitoring and multi-points monitoring. It can improve the stability and reliability, as well as simplify the system. DK Photonics can customize the FBG array for different customers.
  • Center Wavelength Range: 1510 - 1590 nm
  • FBG Length: 15 mm, 10 mm, 5 mm, 3 mm
  • Reflectivity: 30 - 70%, 30 - 99%, >90%
Data Sheet
Fiber Bragg gratings are basic components for a wide range of applications in the areas of telecommunications, lasers and sensors. The wavelength of pump laser diode is varied at different operating temperatures. Fiber Bragg Gratings (FBG) with low reflectivity are used to stabilize the wavelength and intensity of optical amplifier ...
  • Center Wavelength Range: 980 - 1550 nm
  • FBG Length: Not Specified
  • Reflectivity: >1%
Data Sheet
FBG is the key component that acts as a rejection filter in telecommunications. The center wavelength of FBG is very sensitive to changes of temperature or strain. The package of Athermal Packaged FBG is used by the technology of temperature compensation to make the wavelength very stable.
  • Center Wavelength Range: 1 - 980 nm
  • FBG Length: Not Specified
  • Reflectivity: >1%
Data Sheet
Chirped fiber Bragg ggratings are structures where the optical period of the index modulation varies along the grating length. DK Photonics manufactures the chirped fiber Bragg grating by using chirped phase mask. By modifying the intensity of grating depth for reaching any predefined gain compensation profile that creates the gain ...
  • Center Wavelength Range: 1550 - 1650 nm
  • FBG Length: Not Specified
  • Reflectivity: 30 - 99%
Data Sheet
FBG Mirrors are based on the reflective properties of the Fiber Bragg Grating (FBG) written in the core of an optical fiber waveguide. FBG mirrors’ principal application is to use a high and low reflector to form a stable laser cavity having the lasing wavelength selected by the low reflector. Fiber Bragg grating (FBG) is a ...
  • Center Wavelength Range: 1018 - 2040 nm
  • FBG Length: Not Specified
  • Reflectivity: 30 - 99%
Data Sheet
Apodized FBG is a wavelength-reflecting optical device produced by ultraviolet light and phase mask inscription on the optical fiber. It is a basic optical fiber sensing element and is widely used in the fields of optical communication and sensing. AtGrating adopts advanced production technology and Apodized technology to mass ...
  • Center Wavelength Range: 1460 - 1610 nm
  • FBG Length: From 1mm to 20mm
  • Reflectivity: <=1%
  • Wavelength Tolerance: +/-0.5 nm
  • Bandwidth (FWHM): 0.1~1.2 nm
  • ...
Data Sheet
The wavelength of pump laser diode is varied at different operating temperatures. Fiber Bragg Gratings (FBG) Wavelength Locker with low reflectivity is used to stabilize the wavelength and intensity of EDFA pump laser. It can stabilize the channel wavelength to ITU-T Grid standard wavelength in DWDM systems, network monitoring and ...
  • Center Wavelength Range: 940 - 1070 nm
  • FBG Length: 1 mm, 15 mm, 10 mm, 5 mm, 3 mm
  • Reflectivity: >1%
  • Center Wavelength: 940, 972-978, 1064, 1070 nm
  • Wavelength Tolerance: +/-0.25 nm
  • ...
Data Sheet
Long Period Fiber Grating (LPFG) is formed by the periodic refractive index modulation in the fiber axis, and its period is generally larger than 100µm. Its coupling mechanism is: the fundamental mode of the fiber core transmitted forward is coupled into the cladding mode of the forward transmission of several specific ...
  • Center Wavelength Range: 1530 - 1625 nm
  • FBG Length: >25 mm, 25 mm, 20 mm
  • Reflectivity: Not Specified
  • Transmission Loss: >90 %
  • Bandwidth (FWHM): 1~3 nm
  • ...
Data Sheet
Athermal Packaged FBG is a method of compensating the temperature coefficient of fiber grating with a negative temperature coefficient packaging sleeve. It uses a material that does not have a negative temperature coefficient. The encapsulation sleeve can just fully compensate the wavelength drift caused by the temperature change of ...
  • Center Wavelength Range: 1460 - 1610 nm
  • FBG Length: 1 mm, 15 mm, 10 mm, 5 mm, 3 mm
  • Reflectivity: 3 - 90%
  • Bandwidth (FWHM): >0.2 nm
  • Insertion Loss: <0.2 dB
  • ...
Data Sheet
The grating period of Chirped FBG is not constant, but varies along the axial direction. Different grating periods correspond to different Bragg reflection wavelengths, and incident light of different wavelengths is reflected at different positions of the chirped fiber grating, so that the light of different wavelengths will produce ...
  • Center Wavelength Range: 1064 - 1650 nm
  • FBG Length: 1 mm, 3 mm, 5 mm, 10 mm, 15 mm
  • Reflectivity: 10 - 90%
  • Bandwidth (FWHM): 10 (1-15) nm
  • SLSR: >10 dB
  • ...
Data Sheet
The tunable fiber gratings are based on our innovative patented tuning technology that utilizes pure compressive strain tuning to achieve a large wavelength tuning range.The fiber grating tuner is designed to tune the wavelength of various types of fiber grating including fiber Bragg grating, phase-shifted fiber grating, or long ...
  • Center Wavelength Range: 1060 - 2000 nm
  • FBG Length: Custom
  • Reflectivity: 30 - 99%
  • Wavelength Tuning Range:: >20 nm ~ 50nm 
Data Sheet
50G Fiber Bragg Gratings Filter
Broptics Technology Inc
When the channel spacing getting narrower, FBG filter gains its advantages of precise center wavelength position and channel extraction capability. Broptics makes 50G FBG filter specifically for high demanding Dense WDM and Optical Add/Drop Multiplexer applications. While Thin Film filter is technically uneasy to meet 50G filter ...
  • Center Wavelength Range: 1532 - 1536 nm
  • FBG Length: Not Specified
  • Reflectivity: 3 - 90%
Data Sheet
Gain Flattening Filter
Broptics Technology Inc
The gain flattening filter (GFF), or gain equalizer (GEQ), is used to compensate for the uneven gain amplification at different DWDM channel by Er-doped fiber amplifier (EDFA). Broptics develops two fiber grating technologies to achieve best price/performance value for customers.Chirped Fiber Bragg Gratings (CFBG)Chirped gratings is ...
  • Center Wavelength Range: 1525 - 1565 nm
  • FBG Length: Custom
  • Reflectivity: Not Specified
Data Sheet
Tunable FBG is a good solution for many applications including where corrected central Bragg wavelength is necessary. Central wavelength of FBG strongly depends on applied stresses. The mechanics induced strain to the FBG shifting linearly its central wavelength. Relative strain sensitivity of FBGs wavelength is 0.78 10-6 ...
  • Center Wavelength Range: 600 - 2300 nm
  • FBG Length: Custom
  • Reflectivity: Not Specified
  • SLSR, DB: › 8 
  • Types Of Fiber: Single-Mode, PM, Double clad, LMA 
  • ...
Data Sheet
Fiber Bragg Gratings are sensitive to changes in temperature. Their thermo sensitivity is about 6.7 ppm/ ⁰K (+0.11 pm/ ⁰K at wavelength 1550 nm).
  • Center Wavelength Range: 600 - 2300 nm
  • FBG Length: Custom
  • Reflectivity: Not Specified
  • Types Of Fiber: Single-Mode, PM, Double clad, LMA  
  • Thermal Wavelength Stability (0 ÷ +70 ֩C), Nm: < 0.16  
  • ...
Data Sheet
The Wavelength Locker FBGs are used as external reflectors for laser diodes. It is easy to stabilize wavelength generation of pump semiconductor lasers and single frequency lasers by using such FBGs. Low reflection gratings with FWHM 0.3 ÷ 0.8 nm and reflectivity 2 ÷ 5 % are ideal for pump power lasers stabilization. ...
  • Center Wavelength Range: 400 - 2300 nm
  • FBG Length: Custom
  • Reflectivity: 3 - 90%
  • FBG Recoating: None, Acrilate, Polyimide, Aluminium, Copper 
  • Types Of Fiber: Single-Mode, PM, Double clad  
  • ...
Data Sheet
Femtosecond FBGs can be made into all optical transparent fiber materials with a broad range of fiber coatings without stripping the coating from fiber and without the need of recoating in future.
  • Center Wavelength Range: 400 - 2300 nm
  • FBG Length: Custom
  • Reflectivity: Not Specified
  • Reflectivity, %: 0.01 ÷ 95 
  • SLSR, DB: ‹ 8 ÷ 25  
  • ...
Data Sheet
The apodized FBGs have special profile of induced refractive index modulation and grating strength along the grating length. Therefore, side lobes level becomes smaller in compared to ordinary gratings. There are a lot of apodization profiles which lead to the optimization of various FBG parameters such as strength, FWHM, SLSR, the ...
  • Center Wavelength Range: 633 - 2300 nm
  • FBG Length: Custom
  • Reflectivity: Not Specified
  • Reflectivity, %: 5 ÷99 
  • Chirp Rate, Nm/cm: 0.01 ÷ 25 
  • ...
Data Sheet
Fiber Bragg Gratings have many applications in optical communication, laser technique and sensing systems. The FBGs are widely used like in-fiber mirrors or optical filters with narrow band optical spectrum. FBGs can be used like a sensitive element for strain and temperature measuring.
  • Center Wavelength Range: 600 - 2300 nm
  • FBG Length: Custom
  • Reflectivity: Not Specified
  • Reflectivity, % (Low-reflection(LR)): 5 ÷ 40 
  • Reflectivity, % (High-reflection(HR)): › 99 
  • ...
Data Sheet
Fiber Bragg Gratings have many applications in optical communication, laser technique and sensing systems. The FBGs are widely used in-fiber mirrors and optical filters with narrow band optical spectrum. FBGs can be used as a sensitive element for strain and temperature measurements.
  • Center Wavelength Range: 600 - 2300 nm
  • FBG Length: Custom
  • Reflectivity: Not Specified
  • SLSR, DB : ‹ 8 ÷ 25  
  • Reflectivity, %: 50 ÷ 99 
  • ...
Data Sheet