Innovative Solutions for High Volume Optical Components

Cosemi is the first fabless optical components company. Our innovative technology and high volume manufacturing approach deliver breakthrough improvements in cost and performance. Cosemi innovations are enabling fiber optics to go beyond just the telecommunications industry.

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GPON Bidirectional B+ OSA

Cosemi’s LB43-0102P-SC-I is a bidirectional optical sub-assembly (OSA) for GPON applications with (i) a 2.5 Gbps InGaAs PIN photodiode (PD) and an auto gain control (AGC) pre-amplifier (TIA) as receiver and (ii) 1.25 Gbps 1310 nm DFB as transmitter.

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World Class High Speed PIN Photodiodes

Cosemi uses exclusively GaAs and InP based mesa structures on 4" (100mm) wafers produced with industry leading efficiency.   This efficiency has enabled Cosemi to become the world's premier merchant supplier of high volume PIN Photodiodes to Tier 1 Optical component companies.

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Known Good Photodiodes and VCSEL

Cosemi is the world's leading supplier of high volume performance bare die optical components.  All Cosemi products can be purchased in bare die, PIN-TIA in TO-CAN, and OSA form factors.

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Broadband Photodiodes 800-1600nm

High speed photodiodes with responsivity across the industry's widest wavelength range.  800-1600nm with a single photodiode.  Standardize the PIN photodiodes used across your different product lines using Cosemi's new BPD2010.

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Cosemi Narrows EPON/GPON Price Gap

If Cosemi’s approach is successful, the cost gap between EPON and GPON optics will dwindle, leading to similar pricing for ONTs. EPON and GPON will have more in common, and this might lead to more cooperation for next-­gen PON. 

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