High Precision V Groove Lid for Fiber Array FA and PLC Splitter - China Suppliers Factory
Product Introduction
A V Groove Lid is a precision-engineered auxiliary component designed to secure and protect optical fibers in V groove substrates, widely used in fiber optic packaging (e.g., fiber arrays, PLC splitters, or optical modules).
Core Definition & Purpose
It is a thin, rigid cover matched to V groove substrates (silica, ceramic, or glass) with pre-machined V-shaped grooves. Its primary functions include:
- Alignment: Fixing optical fibers in the grooves to maintain precise alignment.
- Stability: Preventing fiber displacement from vibration or external stress.
- Protection: Providing physical protection against dust, moisture, or mechanical damage.
Key Design & Materials
- Material Selection: Common materials include silica glass, soda-lime glass, or engineering plastics (e.g., PPS, LCP). These offer high dimensional stability, low thermal expansion, and substrate compatibility to avoid alignment drift.
- Structural Features: The inner surface is flat or micro-textured for a tight fit. May include positioning notches or adhesive channels for secure bonding (via epoxy resin or laser welding).
- Dimensional Precision: Thickness ranges from 0.1mm to 1mm, with micron-level flatness (≤±5μm) to ensure uniform pressure without damaging the cladding.
Critical Performance Traits
Alignment Retention
Maintains fiber core spacing accuracy (e.g., 127μm or 250μm pitch) with deviation <±1μm, preserving low insertion loss.
Mechanical Stability
Resists impact, bending, and temperature fluctuations (-40℃ to +85℃) without deformation, ensuring long-term reliability.
Bonding Compatibility
Works with standard optical adhesives, forming a hermetic or semi-hermetic seal to isolate fibers from contaminants.
Low Optical Interference
Non-porous and optically inert materials prevent light scattering or absorption, avoiding signal degradation.