The document describes a massively parallel and flexible optical network enabled by gRPC that allows 1Pbps transmission. It uses Space Division Multiplexing (SDM) over multi-core fiber to transmit over 400 optical channels in parallel. A Dynamic MAC allows handling skews caused by different wavelengths, fibers, and routes. The Dynamic MAC and gRPC enable flexible traffic routing and link bandwidth control. A demonstration shows a controller using gRPC to dynamically control link settings and routes based on traffic volume in real-time.

1. Page 1iPOP2020, Virtual Conference, Japan
gRPC Enabled Massively Parallel and Flexible Network
1Pbps SDM-enabled optical
network
Big Data Processing
Data Center
Water and Sewer
services
Power
BEMS
Autonomous
Driving
Train
IoT
FTTH
Virtual Reality
Mobile
4K/8K
Ultra HD
SDM-enabled optical network
Massively parallel transmission and flexible
operations are essential toward 1Pbps class
optical networks with Space Division Multiplexing
(SDM).
DMAC
DMAC
Multi-Core Fiber
Core Router /
Server
Edge Router/
End User
DMAC
Single Core
DMAC Dynamic MAC
Optical Interconnect
Signal distribution
up to 400 lanes
MAC
Tbit/s
Skew handling over
different core, fiber,
routes
t
Self healing mechanism from link failure
gRPC
MAC
Route
Edge Router/
End User
The Dynamic MAC
The Dynamic MAC allows massively parallel transmission
over 400 optical channels and skews handling caused by
different wavelengths, fibers, and routes.
The Dynamic MAC enables flexible traffic by routing and link
bandwidth control with gRPC.

2. Page 2iPOP2020, Virtual Conference, Japan
gRPC Enabled Massively Parallel and Flexible Network
Demo
Service provider
User
Controller
Follows end user traffic volume, controls link
setting by route setting and dynamic MAC
gRPC-WebGUI
From the browser
 Check the line setting status
 Configure parallelism of the
Dynamic MAC
 Change routes
Sender
(Dell R330)
Mapper
(Dell R740)
Demapper
(Dell R740)
Receiver
(Dell R330)
stackSW 1-1
SW 2-1
SW 1-2
SW 2-2
stack
Can switch between long and short routes.
Continue communication even if the route
and skew changes
Netgear M4300 Network
By using gRPC-Web and envoy
(Proxy), it is possible to operate
from a browser.
This work is partly supported by the “Massively Parallel and Sliced Optical Network (MAPLE)” project funded
by the National Institute of Information and Communications Technology (NICT), Japan.
Route
MAC
MAC