40GigE camera can generate of to
40Gbps of data that needs to be
transferred from the sensor to servers
or computers across a fast and reliable
link.
It is well known in the high-bandwidth
connectivity world that signal integrity
tends to degrade at baud rate higher
than 10Gbps over traditional copper
links. At these rates, an optical link is
the only viable solution to transfer the
information generated by these high-
bandwidth devices.
Description of the
application
The quest for fast and reliable data links
40GigE camera integrator are now offering cameras that
integrate optical module capable of >40 Gbps electro-optical
conversion. For that purpose, up to now, camera designers
were considering QSFP+ devices.
Reex Photonics is offering an innovative solution that integrates
the capabilities of QSFP+, but in a format, that occupies 7 times
less space, offers multiple board mounting option, and consumes
less power. The
Light
VISION
®
VM is now giving camera designers
the ability to envision more compact and more reliable product
that can be deployed in harsh environments.
The
Light
VISION VM is a screw-in, robust, industrial, and RoHS
optical module with MPO interface. This combination allows a
standard MPO cable to be plugged into the optical module.
This approach combines a standard MPO cable connection with
a robust, board mounted optical engine providing small size
(footprint), face-plate or line-card mounting, and convenient
optical cabling. In addition, the MPO connector is covered with
an outside cover boot addressing the issue of water and dust
contamination.
The
Light
VISION VM acts like a QSFP+ but offers reduced
dimensions and power consumption, industrial temperature
range, multiple board mounting options, and board-mount and
edge-mount capability. This optical module offers advantages
over the QSFP+ form-factor and it is backed by Reex Photonics
proven reliability and rugged design. This new device is perfectly
suited for 40GigE high-speed camera and demanding machine
vision applications.
Light
VISION VM
Optical interconnect for high-speed, high-
bandwidth 10GigE and 40GigE cameras
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Light
VISION VM
Benefits of using the industrial
Light
VISION VM
■ Robust screw-in board-mounted optical module with reduced footprint suitable
for harsh environment
■ Bandwidth from 20G (2 TX or 2 RX lane) to 120G (12 TX or 12 RX lane)
■ Performance of up to 10.3125 Gbps/channel
■ Lightweight and easy to integrate optical cable
■ Standard MPO parallel ber connector
■ Multimode 850 nm wavelength laser
■ Flexible height adjustable with LGA interposer
■ Rugged RoHS electrical interface
■ Low power consumption: <100 mW per channel
Real size for
Light
VISION VM with
Light
SNAP interface.
Light
VISION with MPO interface features
■ Multimode 850 nm wavelength laser
■ Over 100 m reach on OM3 ribbon ber
■ Standard MPO parallel ber connector
■ Equalizer, pre-emphasis, adjustable output
■ Monitoring: LOS, RSSI, temperature, etc.
■ Integrated microcontroller
■ Available in extended commercial grade temperature range
(0 ºC to 85 ºC)
The
Light
VISION
™
VM module is offered with bandwidth from 20G (2 TX or 2 RX lane) to 120G (12 TX or 12 RX lane). All modules operate
at up to 10.3125Gbps per lane with a BER as low as 10
−12
and a −9dBm sensitivity.
Light
VISION LGA interposer and board attachment. Example of integration of
Light
VISION in a high-
resolution camera.
Light
VISION and QSFP+ feature comparison
QSFP+
Light
VISION
Dimensions (L × W × H) in mm 72 × 18 × 9 23 × 14 × 5
Temperature (ºC) 0 to 70 0 to 85
Mounting options Few Multiple
Direct board mounting No Yes
Power <1.25 W <1 W
MTP/MPO interface Yes Yes
RoHS compliance Yes Yes
Price Low Low
100GBASE-SR4 compatibility Yes Yes
Hot pluggable Yes No
I2C interface Yes Yes
850 nm emission Yes Yes
Size comparison between a QSFP+ (top) and a
Light
VISION module
(bottom).
Light
Vision occupies 7 times less volume than a QSFP+.
OM3 fiber Yes Yes