1311 nm ELSFP CPO Laser, 8 Channels

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)

Overview

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

Part Number	CY-ELSFP-8PMF-UHP1-1311-B
Module Type	ELSFP External Laser Source
Laser Type	Continuous Wave (CW)
Number of Channels	8 Channels — Two Banks of Four Lasers
Typical Wavelength	1311 nm
Optical Output Power	≥ +23 dBm per Channel
Side-Mode Suppression Ratio	≥ 35 dB
Polarization Extinction Ratio	≥ 13 dB
Supported Configuration	2 × DR4 / 2 × FR4 Co-Packaged Optics
Supported Data Rate	200 Gb/s per Lane
Maximum Supported Bandwidth	Up to 6.4 Tb/s
Supply Voltage	3.3 V Nominal (3.135–3.465 V)
Maximum Power Consumption	30 W
Operating Case Temperature	0°C to +70°C
Storage Temperature	0°C to +85°C
Management Interface	CMIS / Two-Wire Serial Interface
Optical Interface	Polarization-Maintaining Blind-Mate Optical Connector
Electrical Interface	Blind-Mate Electrical Connector
Compliance	OIF-ELSFP-02.0, OIF-ELSFP-CMIS-01.0 and RoHS 2.0
Primary Application	CPO Optical Engines, Data-Center Switches and 102.4T Switch Platforms

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

ਪੱਛਮੀ 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 Number	CY-ELSFP-8PMF-UHP1-1311-B
Module Type	ELSFP External Laser Source
Laser Type	Continuous Wave (CW)
Number of Channels	8 channels, arranged as 2 banks of 4
Typical Wavelength	1311 nm
Optical Output Power	≥ +23 dBm per channel
Side-Mode Suppression Ratio	≥ 35 dB
Polarization Extinction Ratio	≥ 13 dB
Supported Configurations	2xDR4 / 2xFR4
Supported Data Rate	200 Gb/s per lane
Maximum Supported Bandwidth	Up to 6.4 Tb/s
Supply Voltage	3.3 V nominal (3.135–3.465 V)
Maximum Power Consumption	30 W
Operating Case Temperature	0°C to 70°C
Storage Temperature	0°C to 85°C
Management Interface	CMIS / Two-Wire Serial Interface
Compliance	OIF-ELSFP-02.0, OIF-ELSFP-CMIS-01.0 and RoHS 2.0
Optical Interface	Polarization-maintaining blind-mate optical connector
Electrical Interface	Blind-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.

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