Fiber Bragg Grating Phase Mask

Fiber Bragg Grating Phase Mask

The Fiber Bragg Grating Phase Mask is a micro/nano diffractive optical element used for high-precision fabrication of fiber Bragg gratings (FBGs). The product adopts the +1/−1 order diffraction self-interference principle. Through a precise periodic structure, it diffracts incident laser light and forms a stable periodic interference light field, thereby writing a periodic refractive index modulation structure into a photosensitive fiber. The product features high period accuracy, high uniformity, low zero-order diffraction, and broad wavelength-band adaptability. It supports customization of various grating structures such as uniform, chirped, multi-period, tilted, and phase-shifted gratings, and can meet FBG fabrication needs in fields such as fiber sensing, fiber lasers, optical communications, and scientific research.

Product features：High precision and high uniformity；Wide period and broad wavelength coverage；Low zero-order diffraction；Supports customization of multiple gratings

Part Number：MP-FBG-PM-260-2650-0.01

Application area：Fiber sensing | Fiber lasers | Optical fiber communications | Optical waveguides and scientific research

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Main parameters
General Parameters
Optional Configurations
Downloads

Main parameters

Core parameters

Grating period range Period accuracy Writing wavelength

260–2650 nm ±0.01 nm 193–1065 nm

Dimension Drawing

General Parameters

Parameter	Specification
Diffraction principle	+1/−1 order diffraction
Grating period range	260～2650 nm
Illumination wavelength range	193～1065 nm
Substrate material	UV-grade fused silica
Period accuracy	±0.01 nm
Period uniformity	±0.01 nm
Chirp rate range	0.01～30 nm/cm*
Guaranteed zero-order suppression	<4%*
Typical zero-order suppression	0～2%*
Zero-order uniformity (10 mm grating length)	±0.5%*
Zero-order uniformity (25 mm grating length)	±0.75%*
Zero-order uniformity (50 mm grating length)	±1%*
Manufacturing process	Holographic fabrication
Manufacturing environment	100% cleanroom environment
Custom specifications	supported
Custom cutting	optional

Note: Specifications marked with * are not applicable to all configurations across the product series.

Working Principle Diagram

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Standard Grating and Substrate Dimensions

Grating size	Substrate size
10 mm × 10 mm	30 mm × 25 mm × 2 mm
25 mm × 10 mm	30 mm × 25 mm × 2 mm
50 mm × 10 mm	3″ × 3″ × 2 mm
Larger grating area	Customization upon inquiry
Custom-sized cutting	Optional

Optional Configurations

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Product title: Fiber Bragg Grating Phase Mask

Product link: https://www.idealphotonics.com/product/detail/1923.html

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