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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Compact wavelength multiplexer using optical-fiber pieces.

E Miyauchi¹, T Iwama, H Nakajima

¹Fujitsu Laboratories Ltd., Fujitsu Ltd., 1015 Kamihodanaha Nalkahbraku, Kawasalk, Japan.

|August 21, 2009

Summary

This study introduces a compact optical wavelength-division multiplexer using multimode fibers and dielectric multilayers. The novel design offers low insertion loss and significantly reduced manufacturing costs for optical communication systems.

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Area of Science:

Optoelectronics
Fiber Optics Communications

Background:

Traditional optical wavelength-division multiplexers often rely on bulky and expensive lens and mirror components.
There is a need for more compact, lightweight, and cost-effective multiplexing solutions in optical communication.

Purpose of the Study:

To develop and characterize a novel optical wavelength-division multiplexer (WDM) using multimode fibers.
To demonstrate a cost-effective and compact WDM device suitable for optical communication.

Main Methods:

Constructed a multiplexer using three multimode fiber pieces with dielectric multilayers on polished ends.
Bonded fiber ends in a crossed V groove to combine two wavelengths (0.82 and 1.2 microm).
Evaluated device performance including insertion loss and cross-talk.

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Main Results:

Achieved a compact (1 cm square) and lightweight (1.5-3 g) multiplexer.
Demonstrated low insertion loss (1 dB) and excellent cross-talk suppression (below -40 dB).
Estimated a potential cost reduction of one order of magnitude compared to conventional designs.

Conclusions:

The developed fiber-based WDM offers a promising alternative to conventional bulk optical components.
This technology has the potential to significantly reduce the cost and size of WDM devices.
The device is suitable for integration into fiber optic communication systems requiring efficient wavelength multiplexing.