PM Coupler

Long Period Grating

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 varying along the fiber, such that the conditions for the interaction of several co-propagating modes are satisfied.

Name:
Long Period Grating
Price:As low as

  

Features

No reflection type

Low insertion loss

 

Applications

Notch band filter

GFF for EDFA

Optical fiber sensing

 Long Period Grating

 

 Specifications

Parameters

Values

Remark

Wavelength(nm)

C+L

 

Insertion Loss(dB)

>8.5

+/-5nm @center wavelength

FWHM(nm)

0.5~3

 

Termination

Bare Fiber, FC/UPC Or FC/APC

Customized

Fiber Type

SMF-28 Or Compatible