The Optical Networking and Communication
Conference & Exhibition

San Diego Convention Center,
San Diego, California, USA

Short Courses

SC408 - Space Division Multiplexing in Optical Fibers

Sunday, 03 March
17:00 - 20:00

Short Course Level: Advanced Beginner


Roland Ryf; Nokia Bell Labs, USA

Short Course Description:

The course provides the background and the principles necessary to understand the transmission of multiple optical signal channels over optical fibers by using spatially diverse light paths (space-division multiplexing). The course will first explain the basic properties of multimode and multicore fibers, addressing the different regimes that can be exploited for optical communication. In particular the course will explain in detail various transmission techniques like mode-division multiplexing based on multiple-input-multiple-output (MIMO) digital signal processing, quasi-single-mode transmission, mode-group-division multiplexing, and transmission over channels with crosstalk.

The course will also address the impact on system performance of space-division multiplexing related impairments like mode-dependent loss (MDL), differential-group delay (DGD), and the basics of nonlinear effects in multimode and multicore fibers.

In particular the course will describe modal dispersion management techniques, like DGD compensation in fiber or lumped devices and the impact on the impulse response of the fiber channel. The impact of the impairments is then discussed for various transmission regimes in dependence on the amount of crosstalk or coupling present between the spatial modes.

The course is heavily based on experimental transmission results performed in various multimode fibers with modes numbers ranging from 3 to 36 modes using various transmission techniques including, for example, distributed Raman amplification. Also, the course will cover in detail transmission over coupled and uncoupled multi-core fibers.

Note that this course is the second part of a two part course.  The first part is course SC459 which will cover SDM related devices and components and it is suggested to attend SC459 in preparation for this course.

Short Course Benefits:

This course should enable you to:

  • Discuss how modes or multiple cores can be exploited to improve a fiber optic communication channel

  • Summarize key advantages and limitations of different fiber types for space-division multiplexing

  • Compare space-division multiplexing to other multiplexing techniques, and list key advantages and potential fields of application

  • Discuss strategies to reduce the complexity of the receiver digital signal processing in space-division multiplexed transmission

  • Describe basic MIMO digital signal processing techniques to calculate bit-error rate and extract impulse responses from raw receiver data

  • List key properties of multimode and multicore fibers and describe their importance in relation to SDM transmission


Short Course Audience:

This course is intended for engineers, scientists, managers, technicians and students who want to learn about space-division multiplexing techniques for fiber-optic communication.

Basic knowledge of fiber-optics communication is assumed. By the end of the course, the audience will know how to exploit multiple modes and cores to enhance fiber-optic communication links.

Instructor Biography:

Roland Ryf is a distinguished member of technical staff in Photonic Subsystems Research at Nokia Bell Labs, Holmdel, NJ, where he is working on photonic technologies for switching, filtering, and amplification in space-division multiplexed optical communication systems. In particular, he has performed numerous record-breaking long distance transmission experiments in multimode and multicore fibers based on multiple-input multiple-output (MIMO) digital signal processing techniques.

Sponsored by: