GLSUN Technology | Optical Communication Solutions & Components

Pioneering Optical Innovation Since 2001

Guilin GLSUN Science and Tech Group Co., Ltd. (GLSUN) is a high-tech enterprise specializing in the R&D, production, and sales of optical communication products. Founded on October 25, 2001, in Guilin, Guangxi Province, China, GLSUN has evolved into a global leader in optical technology.

With over 580 employees and 5 subsidiaries, we serve key industry leaders including Huawei, ZTE, Fiberhome, Innolight, and Lumentum. Our mission is to empower the world with cutting-edge, reliable, and sustainable optical communication solutions.

20+

Years of Expertise

580+

Employees

5

Subsidiaries

Global

Footprint

Our Core Competencies

End-to-end expertise across the optical communication supply chain

Chip-Level Innovation

Full-process semiconductor platform with MOCVD epitaxial growth, quantum well nanotechnology, 3-inch holographic exposure gratings, and advanced packaging for laser and detector chips.

Integrated Modules & Subsystems

From optical transceivers to protection modules and monitoring systems, we deliver modularized, remotely manageable solutions with flexible configurations.

Quality & Compliance

ISO9001:14001 certified and RoHS compliant. Rigorous testing ensures reliability for telecom, data centers, IoT, medical, and cybersecurity applications.

Premium Optical Products

Engineered for performance, reliability, and scalability

1xN (16≤N≤64) Rack-mounted Optical Switch

Ideal for optical component testing and multi-spot sensor monitoring systems with high port density and remote management.

• Broad application in test environments
• Modular design for scalability
• Supports up to 64 ports

Free Space & In-line Optical Isolator

High-performance isolators available in single-mag, no-mag, polarization-dependent, and polarization-independent configurations.

• High power handling capability
• Low insertion loss
• Broad wavelength range support

2.5G/10G/25G DFB & EML Laser Chips

Advanced semiconductor laser chips for high-speed optical communication in data centers and telecom networks.

• 1200nm–1600nm wavelength range
• 2.5G FP/DFB, 10G DFB, 25G EML
• High reliability and low threshold current

10G SFP+ SR Transceiver Module

High-speed optical transceiver for short-reach data transmission in enterprise and data center environments.

• 850nm VCSEL + PIN
• Up to 300m over OM3 MMF
• Hot-pluggable SFP+ form factor

Dual Port 10G LR Fiber Bypass Module

Ensures network continuity by automatically bypassing failed appliances in inline security and monitoring setups.

• 10Gbps data rate
• Single-mode, 1310nm
• Fail-safe operation

Rack-mounted OLP (Optical Line Protection)

Provides automatic failover between primary and backup fiber lines to ensure uninterrupted service.

• Sub-50ms switching time
• Remote monitoring and control
• Supports various protection schemes

MxN 3D Matrix Switch Module

High-density optical switching for complex routing in test systems and network monitoring.

• Scalable architecture
• Low crosstalk and high repeatability
• Supports MEMS and mechanical technologies

APD & PIN Photodiode Detector Chips

High-sensitivity detector chips for 2.5G and 10G optical receivers in telecom and datacom applications.

• 1270–1370nm and 1470–1610nm ranges
• High responsivity and low dark current
• Compatible with TOSA packaging

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Comprehensive Solution Center

Integrated systems for modern optical networks

Optical Transmission System

Complete OTS3000 optical communication integrated platform with plug-in modules for OEO, WDM, AWG, OADM, EDFA, DCM, SOA, OLP, OBP, OPD, and OTDR.

• Modular, scalable design
• Remote management via NMU
• Ideal for metro and access networks

Optical Protection System

Redundant protection solutions including OLP, OBP, and bypass cards to ensure network reliability and uptime.

• Sub-50ms failover
• Dual power supply support
• SNMP and web-based monitoring

Optical Cable Monitoring System

Real-time fiber health monitoring using OTDR cards and intelligent software for early fault detection.

• Automated periodic testing
• Event location and reporting
• Integration with NMS platforms

Why Choose GLSUN?

Trusted by industry leaders for over two decades

20+ Years Experience

Proven track record in optical component manufacturing and system integration.

Certified Quality

ISO9001:14001 and RoHS compliant manufacturing processes.

Innovation-Driven

Full R&D capability from chip design to system-level solutions.

Worry-Free Service

Dedicated support and customization services for global clients.

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Innovating the Future of Light