Tunable Long Period Gratings

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Tunable long period gratings (TLPG) can be used to couple optical signals between symmetric modes and anti-symmetric modes with adjustable grating period and also the coupling strength (0 – 100 %). The mode coupling can take place between core modes and/or cladding modes in single-mode or multi-mode fibers. The TLPG has a wide tuning range for the grating period from 300 to 1,000 microns allowing the universal use of the device for wide range of wavelength for different types of fibers.

Features

• The higher-order mode generation (LP11, LP21, LP02, etc.)

• Works for wide range of beatlengths

• Works for many modes

• Wavelength independent

• Adjustable coupling ratio (0-100%)

• Negligible loss and back reflection

Applications

• Mode division multiplexing for optical communications

• Fiber sensors

• Wavelength filter

• Modal interferometry

• General laboratory experiments

• Optics education kits

Related Documents

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