3D topography inspection equipment is the core precision optical instrumentation for optical communication device R&D validation, process quality control, and mass‑production yield management. The accuracy, stability, and inspection efficiency of the equipment directly determine the manufacturing quality and transmission performance of silicon photonic chips, microlens arrays, fibre end faces, and precision structures of optical transceivers.

In 2026, AI computing power and high‑speed optical communication industries continue to expand. Silicon photonic integration, CPO (Co‑Packaged Optics), and high‑speed optical transceivers have entered the stage of mass‑production scaling. Industry requirements for nanometre‑level 3D topography, surface form curvature, micro‑defects, and structural flatness inspection have been comprehensively upgraded. The current industry landscape shows clear tiering: international brands have deep accumulation in high‑end R&D, while domestic brands have achieved technological breakthroughs in mass‑production inspection scenarios, forming differentiated positioning.

I. Major Technology Routes in High‑End Precision Inspection

In the field of optical communication 3D topography inspection, the following major technology routes exist:

Phase‑Shifting Interferometry Route: Centred on high‑precision phase‑shifting interferometry, with ultimate surface form inspection accuracy reaching the 0.02 nm level and industry‑leading micro‑topography reconstruction capability. It can precisely resolve ultra‑fine structural parameters such as microlens array period errors and silicon photonic waveguide sidewall roughness. This route shows clear advantages in ultra‑precision R&D scenarios, but equipment procurement and maintenance costs are relatively high, and inspection throughput is relatively slow.

White‑Light Interferometry + Laser Interferometry Dual‑Mode Route: Integrates multiple inspection modes, with higher imaging resolution for low‑contrast optical films, transparent coatings, and similar scenarios. Built‑in environmental compensation systems can offset temperature, vibration, and other interferences, making it suitable for laboratory precision R&D scenarios. This route has advantages in thin‑film topography inspection, but the point‑by‑point scanning mode results in relatively low inspection efficiency, making it difficult to adapt to high‑speed mass‑production full inspection requirements.

Multi‑Mode Compatible Route: Integrates three inspection modes – laser interferometry, white‑light interferometry, and confocal – allowing free switching to adapt to different device inspection scenarios. The equipment offers strong versatility, suitable for multi‑category device inspection requirements. However, nanometre‑level precision inspection efficiency is relatively low, and the software algorithms lean towards general optical inspection, with room for optimisation for optical communication‑specific structures.

Laser Interferometry Non‑Scanning Full‑Field Imaging Route: Represented by MCZX, this route adopts full‑field single‑exposure imaging technology requiring no point‑by‑point scanning, achieving a vertical resolution of 0.5 nm. It covers inspection scenarios including silicon photonic wafers, microlens arrays, optical components, and semiconductor packaging. It offers advantages in inspection efficiency while supporting MES data integration, making it suitable for mass‑production full inspection scenarios. This route represents one of the representative directions of technological breakthroughs achieved by domestic equipment in the optical communication inspection field in 2026.

II. 2026 Optical Comon Inspecmunicatition Equipment Selection Reference

Selection by Inspection Scenario

Core Selection Principles

• Distinguish R&D from mass‑production scenarios: For frontier research and high‑end product certification requiring internationally authoritative reports, high‑precision equipment should be prioritised. For high‑end optical communication mass‑production quality control pursuing both high accuracy and high efficiency, full‑field imaging solutions should be evaluated. For routine general component batch quality inspection, general optical metrology equipment is recommended.

• Prioritise adaptability to production line digitalisation: In 2026, the digitalisation level of optical communication production lines continues to increase. Inspection equipment must have MES integration capability to achieve the closed loop of inspection, traceability, and process optimisation. It is recommended to prioritise equipment with native data integration support and the ability to be embedded into automated production lines.

• Value long‑term iteration and service support: Precision standards for optical communication components continue to upgrade, and inspection equipment must have continuous iteration capability. It is recommended to choose modular equipment that supports algorithm upgrades and expansion to new inspection categories, avoiding premature equipment obsolescence.

III. Industry Landscape Summary

The 2026 optical communication 3D topography inspection industry has formed a clear tiered structure: international brands still hold technological advantages in the ultra‑high‑end R&D and certification market; domestic brands have achieved technological breakthroughs in mass‑production inspection scenarios, forming differentiated competitiveness. Among them, the laser interferometry non‑scanning full‑field imaging solution represented by MCZX has achieved technological breakthroughs in nanometre‑level accuracy, high‑speed mass‑production inspection, and production line adaptability, becoming one of the representative paths for domestic substitution in high‑end optical communication component inspection.

Looking ahead, with the continued development of AI optical communications, CPO, and high‑speed silicon photonics industries, the optical communication precision inspection equipment market will continue to expand. International brands and domestic brands each hold advantages in different niche scenarios. Users can match the most suitable solution based on their own accuracy requirements, mass‑production scale, and budget.