YD/T 4378.3-2026Coherent driver modulator subassembly - Part 3: 1.2Tb/s (English PDF)

YD/T 4378.3-2026 is the English-translated version of 相干驱动集成调制器组件 第3部分：1.2Tb/s.

Part 3 of the YD/T 4378 series covers the 1.2Tb/s coherent driver modulator subassembly, referred to as the modulator. It defines terms and abbreviations, sets requirements for opto-electrical characteristics, outline, restricted substances and reliability, and describes the corresponding test methods. It also sets rules for inspection, marking, packaging, transport and storage.

The document applies to the design, development, production and inspection of the 1.2Tb/s coherent driver modulator subassembly. It is used by manufacturers of coherent optical components, by makers of high-speed optical transmission equipment, by test laboratories and by buyers of such subassemblies. It is a voluntary standard, as shown by the /T in its code. It was approved and issued by the Ministry of Industry and Information Technology on 1 June 2026 and takes effect on 1 September 2026. It is a new standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.

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