포셈

Shaping the Future of
Photonic Semiconductor
Technology for a
Connected World 

Core Technology of
Photonic Semiconductor

PHOSEM provides optical semiconductor device development and customized technical services, focusing on Photodiodes, APDs, VCSELs, and FAB Services.

Photodiode Technology

InGaAs PIN Photodiode,
Side Illuminated Photodiode,
Planar APD Product Technology

APD Technology

Optical Detection Technology Based on InGaAs APD, 25G APD, and Single Photon APD

VCSEL Technology

795nm VCSEL,
Quantum Sensor VCSEL,
VCSEL Module Product Technology

Compound Semiconductor

Compound Semiconductor-Based Optical Device Development Capabilities

High Speed Optical Device

25G APD and Other Product Series for High-Speed Optical Communications

Single Photon Detection

Single-Photon APD Product Line for Weak Optical Signal Detection

VCSEL Module

VCSEL Module Product Line for Precision Light Source Applications

FAB Service

Customer-Tailored FAB Services and Technical Consultation

Based on a management philosophy that prioritizes employee value, Phosem Co., Ltd. continuously strives to realize this vision.

We believe that only happy employees can create high-quality products, and only high-quality products can satisfy customers,
thereby creating added value and building a sustainable company through customer satisfaction.

We believe that sustainability stems from continuous innovation, and the foundation of innovation lies in new knowledge and technology.

Accordingly, based on the mottoes of knowledge management and technology management,
Phosem develops and operates educational programs tailored to each member’s needs,
realizing both employee growth and the company’s sustainable development.

PHOSEM is a photonic semiconductor company that develops and manufactures compound semiconductor-based optical devices.

Welcome to the Future
of Photonic Semiconductors

Phosem