An optical fiber splice tray (100, 200), comprising: a base (102, 202) having an external perimeter; a fiber management region (120, 220) within the external perimeter of the base (102, 202); a first splicing zone (110, 210) on a first side of the fiber management region and separated from the fiber management region by a first containment wall extending from the base; a second splicing zone (130, 230) on a second side of the fiber management region and separated from the fiber management region by a second containment wall extending from the base, the second side being opposite the first side; at least one first optical component location (159, 259) disposed adjacent to the first splicing zone opposite the fiber management region, the first splicing zone being between the at least one first optical component location and the fiber management region (120, 220); and at least one second optical component location (169, 269) disposed adjacent to the second splicing zone (130, 230), the second splicing (130, 230) zone being between the at least one second optical component location (169, 269) and the fiber management region (120, 220), wherein the first splicing zone (110, 210) and the second splicing zone (130, 230) comprise a plurality of catch walls (113, 133, 213, 233) configured to hold a plurality of single fiber optical fiber splices, wherein each of the first and second splicing zones (110, 210) is configured to hold between 8 to 12 single fiber splices such that a defined connection density of splice holders per unit of volume of the optical fiber splice tray is at least 5 single splices per cubic inch, 16.4 cm 3; the optical fiber splice tray comprising a sidewall (108, 208) extending from the base (102, 202) at least partially around the external perimeter of the base, the sidewall (108, 208) defining a cable entrance region (105, 205) at a first end of the splice tray (100, 200); and a pair of curved fiber entrance / exit channels (106, 206) extending from the cable entrance region (105, 205) toward the exterior of the optical fiber splice tray and configured to receive fibers entering or exiting the splice tray (100, 200) at the first end of the splice tray (100, 200). a base (102, 202) having an external perimeter; a fiber management region (120, 220) within the external perimeter of the base (102, 202); a first splicing zone (110, 210) on a first side of the fiber management region and separated from the fiber management region by a first containment wall extending from the base; a second splicing zone (130, 230) on a second side of the fiber management region and separated from the fiber management region by a second containment wall extending from the base, the second side being opposite the first side; at least one first optical component location (159, 259) disposed adjacent to the first splicing zone opposite the fiber management region, the first splicing zone being between the at least one first optical component location and the fiber management region (120, 220); and at least one second optical component location (169, 269) disposed adjacent to the second splicing zone (130, 230), the second splicing (130, 230) zone being between the at least one second optical component location (169, 269) and the fiber management region (120, 220), wherein the first splicing zone (110, 210) and the second splicing zone (130, 230) comprise a plurality of catch walls (113, 133, 213, 233) configured to hold a plurality of single fiber optical fiber splices, wherein each of the first and second splicing zones (110, 210) is configured to hold between 8 to 12 single fiber splices such that a defined connection density of splice holders per unit of volume of the optical fiber splice tray is at least 5 single splices per cubic inch, 16.4 cm 3; the optical fiber splice tray comprising a sidewall (108, 208) extending from the base (102, 202) at least partially around the external perimeter of the base, the sidewall (108, 208) defining a cable entrance region (105, 205) at a first end of the splice tray (100, 200); and a pair of curved fiber entrance / exit channels (106, 206) extending from the cable entrance region (105, 205) toward the exterior of the optical fiber splice tray and configured to receive fibers entering or exiting the splice tray (100, 200) at the first end of the splice tray (100, 200).