
CWDM4 ELSFP
for 2×FR4 CPO
CY-ELSFP-8PMF-UHP1-CWDM4-B
Two CWDM4 wavelength sets deliver continuous-wave light to compatible CPO optical engines.
Photonics for what’s next
Western Optronics supplies ELSFP continuous-wave laser sources for co-packaged optics (CPO), optical components and precision test equipment.

Featured laser sources
Explore our CWDM4 and 1311 nm external laser sources for CPO optical engines.

CY-ELSFP-8PMF-UHP1-CWDM4-B
Two CWDM4 wavelength sets deliver continuous-wave light to compatible CPO optical engines.

CY-ELSFP-8PMF-UHP1-1311-B
Eight 1311 nm laser channels, arranged in two banks of four, supply external light for CPO applications.
| Parameter | CWDM4 ELSFP | 1311 nm ELSFP |
|---|---|---|
| Model | CY-ELSFP-8PMF-UHP1-CWDM4-B | CY-ELSFP-8PMF-UHP1-1311-B |
| CW channels | 8 — two CWDM4 wavelength sets | 8 — two banks of four |
| Wavelengths | 2 × (1271 / 1291 / 1311 / 1331 nm) | 1311 nm nominal |
| Output per channel | ≥ +23 dBm | ≥ +23 dBm |
| Management / supply | CMIS / 3.3 V nominal | CMIS / 3.3 V nominal |
These modules provide continuous-wave light for external modulation. Select the wavelength arrangement required by your optical engine.
Need help choosing a wavelength configuration? Read the ELSFP selection guide →
For a quotation, include the model, quantity, delivery schedule, optical connector, fiber assignment and host platform.
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Talk to our team
Share your target wavelengths, optical power and host platform. We’ll help you identify the relevant product configuration.