The 6x6 two-dimensional fiber array is a high-precision, multi-channel optical component comprising 36 fibers arranged in a 6-row by 6-column configuration. Typically fabricated using silicon-based V-groove or photolithography techniques, it is employed in optical communications, sensing, and laser processing applications to achieve precise fiber positioning, coupling, splitting, and combining. Its critical characteristics include core-to-core distance accuracy, consistency, and low crosstalk.

*High-Precision Positioning: Utilizes precision-machined silicon substrates (fiber positioning substrates) to achieve micron-level fiber alignment through photolithography etching or V-groove technology.

*High Consistency: Silicon-based technology eliminates cumulative errors from mechanical cutting, ensuring consistent fiber positioning.

*Low Crosstalk: Precise spacing control guarantees optical signal isolation between channels.

*Versatility: Enables array coupling of fibers, line-to-array conversion (e.g., converting a planar array to a line array), and transmission/reception functionality.

*Customization: Core spacing (distance between fiber centers) ranges from tens of micrometers to several millimeters, with channel counts tailored to meet diverse application requirements.