8-channel ELSFP external continuous-wave laser source module
CY-ELSFP-8PMF-UHP1-1311-B 1311 nm ELSFP laser specification diagram
ELSFP optical module with evaluation board, cooling fan and acrylic support assembly
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8-channel ELSFP external continuous-wave laser source module
CY-ELSFP-8PMF-UHP1-1311-B 1311 nm ELSFP laser specification diagram
ELSFP optical module with evaluation board, cooling fan and acrylic support assembly
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8-channel ELSFP external continuous-wave laser source module
CY-ELSFP-8PMF-UHP1-CWDM4-B +23 dBm 8-Channel CWDM4 ELSFP CW Laser Module for 2xFR4 CPO

CY-ELSFP-8PMF-UHP1-1311-B +23 dBm 8-Channel 1311nm ELSFP CW Laser Module for CPO

The CY-ELSFP-8PMF-UHP1-1311-B is an eight-channel ELSFP continuous-wave laser source for co-packaged optics. Two banks of four lasers operate at a typical wavelength of 1311 nm, with at least +23 dBm output per channel. The module provides CMIS management and a polarization-maintaining blind-mate optical interface, with a nominal 3.3 V supply.

For external modulation by a compatible optical engine; not a complete optical transceiver. Compare CWDM4 and 1311 nm ELSFP configurations.

Download Datasheet (PDF)

Evaluation Kit Datasheet (PDF)

Optical Test Cable Datasheet (PDF)

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Overview

Overview

The CY-ELSFP-8PMF-UHP1-1311-B is an eight-channel ELSFP continuous-wave laser source for co-packaged optics. Two banks of four lasers operate at a typical wavelength of 1311 nm, with at least +23 dBm output per channel. The module provides CMIS management and a polarization-maintaining blind-mate optical interface, with a nominal 3.3 V supply.

External light for a CPO optical engine

The ELSFP supplies continuous-wave light. A compatible optical engine performs the external modulation; the ELSFP is not a complete optical transceiver.

This functional overview separates the light source, optical engine and switch ASIC so their roles are clear.

Real photograph of the Frontier GPU supercomputer server aisle at Oak Ridge National Laboratory; application context only
Enlarge image · Frontier GPU supercomputer, ORNL. Application context only—not an ELSFP installation or compatibility claim. Photo: “Frontier Supercomputer (1)” by OLCF at ORNL, CC BY 2.0; resized. No endorsement implied.

1311 nm ELSFP for 2×DR4 — conceptual view


Concept illustration of a 1311 nm ELSFP external CW laser source, a switch ASIC and a CPO optical engine. Eight CW channels are shown as two logical banks of four at a typical wavelength of 1311 nm. Rear optical and electrical interfaces are not shown; no wiring or compatibility is implied.
Engineering concept only — not a photograph of an installed system, a mechanical drawing, a connector or fiber map, or a wiring guide. The ELSFP supplies continuous-wave light for external modulation by a compatible optical engine. All eight channels have a typical wavelength of 1311 nm; the two banks are logical groups, not fiber assignments. The module's optical and electrical interfaces are at its rear and are not shown. Confirm connector configuration, fiber assignment and host-system compatibility for the proposed setup. Select the image to enlarge.

Eight channels. One typical wavelength.

The 1311 nm model has two banks of four CW lasers. All eight channels share a typical wavelength of 1311 nm.

The specified minimum optical output is +23 dBm per channel, not the combined output of the module. Refer to the product datasheet for conditions and limits.

Confirm the optical engine's wavelength arrangement, connector and fiber assignment before selecting a configuration.

Explore the evaluation hardware

View the ELSFP module with an evaluation board and cooling-fan assembly. Use the evaluation-kit and optical-test-cable datasheets to discuss your test setup with our team.

View evaluation-kit datasheet (PDF)

ELSFP module mounted on an evaluation board with cooling fan and acrylic support
Enlarge image · Existing Western Optronics evaluation-board image. Configuration shown for reference; confirm required accessories separately.
Specifications

Specifications

Part NumberCY-ELSFP-8PMF-UHP1-1311-B
Module TypeELSFP External Laser Source
Laser TypeContinuous Wave (CW)
Number of Channels8 Channels — Two Banks of Four Lasers
Typical Wavelength1311 nm
Optical Output Power≥ +23 dBm per Channel
Side-Mode Suppression Ratio≥ 35 dB
Polarization Extinction Ratio≥ 13 dB
Supported Configuration2 × DR4 / 2 × FR4 Co-Packaged Optics
Supported Data Rate200 Gb/s per Lane
Maximum Supported BandwidthUp to 6.4 Tb/s
Supply Voltage3.3 V Nominal (3.135–3.465 V)
Maximum Power Consumption30 W
Operating Case Temperature0°C to +70°C
Storage Temperature0°C to +85°C
Management InterfaceCMIS / Two-Wire Serial Interface
Optical InterfacePolarization-Maintaining Blind-Mate Optical Connector
Electrical InterfaceBlind-Mate Electrical Connector
ComplianceOIF-ELSFP-02.0, OIF-ELSFP-CMIS-01.0 and RoHS 2.0
Primary ApplicationCPO Optical Engines, Data-Center Switches and 102.4T Switch Platforms
Contact Information

Contact Information

Request pricing and integration support

Use the Request a Quote button above. Please include the following details so we can check the right configuration:

  • Model: CY-ELSFP-8PMF-UHP1-1311-B
  • Required quantity and delivery schedule
  • Wavelength arrangement and optical power requirements
  • Optical connector, fiber assignment and host platform

WESTERN OPTRONICS INC.
3652 Edison Way, Fremont, CA 94536, USA

United States: +1 510-366-7353
China / WeChat: +86-19926673267（微信同号）
Email: sales@westernoptronics.com

Contact our team

Description

+23 dBm 8-Channel 1311nm ELSFP CW Laser Module for CPO

The CY-ELSFP-8PMF-UHP1-1311-B is a high-power External Laser Small Form Factor Pluggable (ELSFP) continuous-wave laser source designed for co-packaged optics (CPO) switch platforms.

The module integrates eight 1311 nm CW lasers in two banks of four and provides a minimum optical output power of +23 dBm per channel. It is designed to supply external laser light to optical engines co-packaged with a switch ASIC.

Targeted for 102.4T CPO architectures, the module supports 200 Gb/s-per-lane applications, 2xDR4 or 2xFR4 configurations, and aggregate bandwidth of up to 6.4 Tb/s.

Key Features

  • Eight-channel 1311 nm continuous-wave laser source
  • Minimum +23 dBm optical output power per channel
  • Supports 2xDR4 and 2xFR4 CPO configurations
  • Designed for 200 Gb/s per lane
  • Supports bandwidth of up to 6.4 Tb/s
  • Targeted for 102.4T co-packaged optics switch platforms
  • OIF-ELSFP-02.0 compliant
  • OIF-ELSFP-CMIS-01.0 compliant
  • Blind-mate optical and electrical connectors
  • Polarization-maintaining optical interface
  • Single 3.3 V power supply
  • System and eye-safety support
  • RoHS 2.0 compliant

Technical Specifications

Part NumberCY-ELSFP-8PMF-UHP1-1311-B
Module TypeELSFP External Laser Source
Laser TypeContinuous Wave (CW)
Number of Channels8 channels, arranged as 2 banks of 4
Typical Wavelength1311 nm
Optical Output Power≥ +23 dBm per channel
Side-Mode Suppression Ratio≥ 35 dB
Polarization Extinction Ratio≥ 13 dB
Supported Configurations2xDR4 / 2xFR4
Supported Data Rate200 Gb/s per lane
Maximum Supported BandwidthUp to 6.4 Tb/s
Supply Voltage3.3 V nominal (3.135–3.465 V)
Maximum Power Consumption30 W
Operating Case Temperature0°C to 70°C
Storage Temperature0°C to 85°C
Management InterfaceCMIS / Two-Wire Serial Interface
ComplianceOIF-ELSFP-02.0, OIF-ELSFP-CMIS-01.0 and RoHS 2.0
Optical InterfacePolarization-maintaining blind-mate optical connector
Electrical InterfaceBlind-mate electrical connector

Applications

  • External laser source for CPO optical engines
  • 102.4T co-packaged optics switch platforms
  • High-capacity data-center switches
  • Switch and router interconnects
  • 200 Gb/s-per-lane optical networking systems

Ordering Information

Available fiber-assignment options include 110*110 and 111*110. Please specify the required connector and fiber assignment when requesting a quotation.

Compatibility Notice: Please confirm the required optical connector configuration, fiber assignment and host-system compatibility before ordering.

Product selection questions

Does the 1311 nm ELSFP provide eight different wavelengths?

No. CY-ELSFP-8PMF-UHP1-1311-B contains eight CW laser channels arranged in two banks of four, with a typical wavelength of 1311 nm. It is not the two-set CWDM4 wavelength configuration.

Is +23 dBm the total module output?

No. The listed minimum optical output is +23 dBm per channel. Supply voltage, power consumption and case-temperature limits apply to the module; optical output is specified separately for each channel.

Can this ELSFP replace a complete optical transceiver?

No. It supplies continuous-wave light to a compatible CPO optical engine for external modulation. Confirm the wavelength arrangement, connector, fiber assignment and host requirements rather than selecting only by the ELSFP form factor.

What information is needed to select a configuration?

Send the full model, quantity, delivery schedule, required wavelength and optical power, optical connector, fiber assignment and host platform. Request configuration support from Western Optronics.

For two sets of four CWDM4 wavelengths, compare the CY-ELSFP-8PMF-UHP1-CWDM4-B CWDM4 ELSFP CW laser source. Select the wavelength arrangement required by the optical engine; these ELSFP modules supply continuous-wave light for external modulation.

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