1. General Description
CFP-40GBASE-LR4-x is a 40Gb/s transceiver module for optical communication
applications compliant to 40GBASE-LR4 of the IEEE P802.3ba standard. The module
converts 4 inputs channels of 10Gb/s electrical data to 4 CWDM optical signals and
then multiplexes them into a single channel for 40Gb/s optical transmission.
Reversely on the receiver side, the module de-multiplexes a 40Gb/s optical input into
4 CWDM channels of optical signals and then converts them to electrical data for 4
output channels.
The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331 nm
as members of the CWDM wavelength grid defined in ITU-T G694.2. For SMF
applications, the transceiver module has an operating range of 2m~10km.
CFP-40GBASE-LR4-xis designed with form factor, optical/electrical connection and
MDIO interface according to the CFP Multi-Source Agreement (MSA). The innovative
design has all the fibers inside the CFP package configured without any splicing or
non-permanent connector. Also, fiber routines are neatly organized and fixed inside a
stainless steel container. For mechanical and environmental reliability, the WDM
sections are aligned and secured to the container by laser welder, and then aligned
and affixed with each CWDM laser or PIN/TIA TO to form an integrated structure of
TOSA or ROSA.
2. Functional Description
CFP-40GBASE-LR4-x contains a duplex LC connector for the optical interface and a
148-pin connector for the electrical interface. The chart in section 3 shows the
functional block diagram of the CFP-40GBASE-LR4-x CFP Transceiver.
Transmitter Operation
The transceiver module receives 4 channels of 10 GB/s electrical data, which are
processed by a 4 channel Clock Data Recovery (CDR) IC that reshapes and reduces
the jitter of each electrical signal. Subsequently, a DML laser driver IC converts each
channel of the 4 electrical signals to optical signal from one of the 4 CWDM lasers.
The optical output power is maintained constant by an automatic power control (APC)
circuit. All of 4 optical signals are multiplexed by CWDM filters in a daisy-chain
configuration to form a single optical output of 40 GB/s.
Receiver Operation
北亿纤通科技有限公司
F-tone Technology Co., Ltd.
Add :No.3,Run Xin Incubation Park,High-tech District,Chengdu,Sichuan,China
V3.0
2011-06-22
Web :http://www.f-tone.com Email :sales@f-tone.com
评论0