For a wide custom selection of indoor fiber optical cables, you can consider contacting manufacturers or suppliers who specialize in providing customized solutions. These companies often offer a range of options in terms of fiber type, core size, jacket material, and overall design to suit your specific indoor application needs.

When looking for a supplier, consider factors such as:

1. Fiber Type: Choose between single-mode or multi-mode fibers based on your bandwidth and distance requirements.
2. Core Size: Select the appropriate core size (e.g., 9/125 µm for single-mode or 50/125 µm and 62.5/125 µm for multi-mode).
3. Jacket Material: Choose the jacket material based on environmental conditions (e.g., PVC for general indoor use or LSZH for low-smoke, zero-halogen requirements).
4. Custom Lengths and Configurations: Ensure the supplier can provide cables in the lengths and configurations (e.g., simplex, duplex, or higher) you need.