ELSFP (External Light Source Fixed Pointer) modules provide continuous-wave lasers to CPO switches. Rather than integrating lasers inside the switch package, ELSFP places lasers in a separate, accessible module connected via fiber arrays.
This architecture simplifies switch thermal management—lasers are external—but requires high-performance thermal substrates to manage heat from dense multi-wavelength laser arrays.
Industry-standard form factor for 8-channel CW laser arrays. Custom DFM available for any footprint.
Each ELSFP module typically contains 8 CW-DML lasers at 100Gb/s each = 800Gb/s per module.
8 high-power CW lasers in a dense array. Heat flux exceeds 500 W/cm².
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Handles >500 W/cm² from dense 8-channel laser arrays
Multi-layer copper for laser electrode fan-out and grounding
Up to 16 channels in standard pitch configurations
Direct replacement for ELSFP-02.0 standard submounts