In-fiber LP01-LP11 Mode Coupler

               Long Period Grating (LPG) Mode Converter

Product Overview

The Phoenix Photonics in-fiber LP01-LP11 mode coupler is for use with dual mode optical fiber. The mode coupling is achieved by a Long Period Grating (LPG). The principle of operation istocreateaperiodic mode coupling in the fiber at the beat length between the two modes. Phoenix creates the coupling using the electric arc technique. The grating created in the fiber willcouplepowerbetweenthe LP01 mode and the LP11 mode when the period is matched to the beat length between the modes at the central operational wavelength.

Available at center wavelengths in C&L band, the center wavelength, output mode isolation and bandwidth is defined by the grating period and number of coupling points. The converter canbeusedtoconvert LP01 to LP11 or conversely to couple LP11 to LP01 and can be used in both mode multiplexers and demultiplexers. Higher order mode converters for 4-mode fibers are availableonrequest.

Features & Applications

FEATURES:
• Fixed coupling between LP01
and LP11
• Compact design
• Custom fiber design
• High mode isolation
• Low loss

EXAMPLE APPLICATIONS
• LP01 to LP11 mode conversion
and LP11 to LP01 conversion
• Mode division
multiplexing/demultiplexing
• Dual mode fiber component test
• Dual mode fiber sensors