Unique dielectric waveguide, RF & PAM SoCs for the terabit era
E-TubeTM is a groundbreaking technology that will eliminate the need for expensive and power-hungry optics and bulky copper cables.
PT-S20032 SFP56 Active E-TubeTM Cable
- Single channel 56Gbps/PAM4
- E-TubeTM transceiver
- Up to 5m
- Plug and Play
- Low power consumption (<1W)
- Lighter than copper cable

The PT-S20032 E-TubeTM is a single 56 Gbps Small Form-factor, Pluggable (SFP) E-TubeTM module that conforms to 50G BASE-SR4 Ethernet. It is a 56Gbps PAM4 lane that can operate up to 5 meters whileachieving good BER performance and maintaining low power dissipationand low cost. It achieves an unprecedented level of performance in terms of bandwidth-per-carrier frequency, power, and density without requiring a precision manufacturing process unlike conventional optical solutions. E-TubeTM replaces conventional copper conductor-based and optical interconnects in high-speed, short-reach communication links such as intra-server-rack-connections.

PT- Q2282240 QSFP28 Active E-TubeTM Cable
- Quad channel 100Gbps NRZ
- E-Tube transceiver
- Up to 5m
- Plug and Play
- Low power consumption (<3.2W)
- Lighter than copper cable
The PT- Q2282240 E-TubeTM is a parallel 100 Gbps Qual Small Form-factor, Pluggable (QSFP) E-TubeTM module that conforms to 28GBASE-SR4 Ethernet. It is four 25.78Gbps NRZ lanes that can operate up to 5 meters while achieving good BER performance and maintaining low power dissipation and low cost. It achieves an unprecedented level of performance in terms of bandwidth-per-carrier frequency, power, and density without requiring a precision manufacturing process unlike conventional optical solutions. E-TubeTM replaces conventional copper conductor-based and optical interconnects in high-speed, short-reach communication links such as intra-server-rack-connections.
UHD TV interface
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Display technology has been making rapid progress and it’s becoming thinner and more clear.
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The E-TubeTM solution enables high-speed video data transmission with a low-power, low-cost, and highly reliable consumer interconnect for ultra-slim UHD TV interfaces.

LEARN MORE ABOUT E-TUBE
How E-TubeTM works
01
(Copper) Conductor has been used for the last 150 years
- cost and power efficient
- low electrical loss


02
Lossy trace at high-frequency
- Free electrons are localized at the surface
- Metallic interconnect is very lossy at high-frequency
- Metallic connection is not good for high data rate signaling
03
E-TubeTM
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no skin effect (no free electron)
- low channel loss for high data rate signaling (56Gbps+ per port)
- very low cost, similar to a plastic straw
- suitable for high volume market needs
- vertical coupling; small footprint allows high port density
- no crosstalk


04
Chip-to-chip interconnect with clad-dielectric waveguides
- E-TubeTM technology is composed of:
- Clad dielectric waveguide cable
- Low-power transceiver IC
- Low cost / high density connector
- Reach can be extended with more power and E-TubeTM area