Overview
EN ISO 11807-2:2021 - Integrated optics: Vocabulary (Part 2) defines the standardized terms used to classify integrated optical elements, components, modules and devices. Published as an EN adoption of ISO 11807-2:2021 and approved by CEN in October 2021, this second edition updates and harmonizes terminology for the photonics and optoelectronics communities, superseding the 2005 edition. The standard is specifically targeted at applications in optical communications, sensors, and related photonic systems.
Key topics
- Scope and purpose
- Provides clear, authoritative vocabulary for classifying integrated optical items (elements → components → modules → devices).
- Ensures consistent terminology across design, documentation, testing and procurement.
- Classification criteria
- Mode type: single‑mode vs. multi‑mode.
- Configuration complexity: element, component, module, device (illustrated in the standard).
- Function: three functional classes - passive, dynamic, active.
- Functional definitions
- Passive elements: operate by waveguiding and interference without external modulation; only optical inputs/outputs (e.g., Y‑branch, taps, directional couplers, 3‑dB and N×M star couplers).
- Dynamic elements: change the complex refractive index using effects such as electro‑optical, acousto‑optical, piezo‑optical, thermo‑optic or electro‑absorptive mechanisms.
- Active elements: rely on photo‑effect or photo‑emission (e.g., integrated diode lasers, optical amplifiers, photodetectors).
- Examples of passive structures
- Slab waveguide, strip (channel) waveguide and strip variants (embedded, buried, ridge, rib, strip‑loaded) with schematic illustrations referenced.
- Normative references
- Links to ISO 11807‑1 (basic terms and symbols) and ISO 14881 (interface/coupling parameters) for cohesive terminology and parameters.
Applications and users
Who benefits:
- Photonics product designers and engineers standardizing component descriptions.
- Manufacturers and suppliers producing waveguides, couplers, modulators, lasers and detectors.
- Test labs and quality engineers aligning test reports and specifications.
- Procurement, systems integrators and regulatory bodies requiring unambiguous product classification.
Practical uses:
- Improving interoperability and clarity in datasheets, drawings and test plans.
- Supporting product classification for optical communications, sensor modules, LiDAR subsystems and integrated photonic circuits.
- Facilitating standards harmonization between ISO and IEC terminology.
Related standards
- ISO 11807‑1 - Basic terms and symbols for integrated optics.
- ISO 14881 - Interfaces and coupling parameters.
- Note: EN ISO 11807‑2:2021 is CEN‑endorsed and intended for national adoption across CEN member bodies.
Keywords: EN ISO 11807-2:2021, integrated optics vocabulary, classification of integrated optical elements, waveguide, directional coupler, photonic devices, optical communications, sensors, passive dynamic active.
