Abstract: A male/female compatible multi-fiber adapter for connecting a multi-fiber ferrule into a ferrule in an optical fiber connector, comprising an adapter housing provided with a positioning mechanism for placing the multi-fiber ferrule. The positioning mechanism has a first opening for inserting the multi-fiber ferrule; and a second opening for receiving the optical fiber connector in a pluggable manner, the two openings combined connect the multi-fiber ferrule and the ferrule in the optical fiber connector. The first opening, movably provided on the adapter housing, is provided with a limiting latch for position-limiting the multi-fiber ferrule along the axial direction of optical fibers. Position-limiting and release of the multi-fiber ferrule is achieved by the movement of the limiting latch, facilitating the dismounting of the multi-fiber ferrule; the limiting latch has a movable mounting relationship with the adapter housing, and will not be lost, thereby ensuring the stability of position limiting.

Abstract: The invention discloses a ferrule-type optical fiber connector, which comprises a connector mainbody, an elastic tailseat matched with the connector mainbody, a first ferrule and a second ferrule coupled with each other; the second ferrule is set on the connector mainbody, the first ferrule is set on the elastic tailseat, the elastic tailseat comprises a spring, characterized in that the spring is set on the side of the first ferrule. An advantage is that by arranging the spring for elastically connecting the first ferrule and the second ferrule on the side of the first ferrule, the total length of the entire optical fiber connector is no longer the sum of the total length of the ferrule body and the entire length of the spring. On the premise of meeting the connection and usage requirements, the total length of the entire optical fiber connector is minimized.

Abstract: An initially loose MPO optical fiber connector, comprising: a ferrule (2) capable of accommodating an optical fiber, an end face of the optical fiber terminating at the front end of the ferrule (2); an inner housing (3) sleeved on the ferrule (2) and capable of limiting the ferrule (2); pin brackets (4), provided at the rear end of the ferrule (2); springs (8) provided at the rear ends of the pin brackets (4); a backpost (10) for engaging with the inner housing (3); and a component for repeatedly controlling the springs (8) to extend and retract. The wear of pin holes (19) is reduced, the number of times that the optical fiber connector can be plugged/unplugged is remarkably increased, and the service life of the optical fiber connector is greatly prolonged.

Abstract: The disclosed hybrid microlens enables the economical production of large diameter, high numerical aperture refractive microlens by microfabrication. The hybrid microlens has a combination of a refractive microlens formed on a thin layer of high index material such as silicon and a spacer layer of a low index material such as fused silica. Advantages include substantially reduced lens sag, fast etching of the microlens, small wafer stack thickness, large diffraction angle in the low index spacer, large optical beam diameter, high optical performance, and low cost. Also disclosed is a design for substantially reduced optical return signal and small polarization dependent optical loss from an optical fiber which is perpendicular to and butt-coupled to a planar optical surface. This design is to form a small slanted surface on the planar optical surface in the vicinity of the optical fiber core and fill the space between the fiber and the slanted surface with an index-matching optical epoxy.

Abstract: A multilayer optical fiber coupler for coupling optical radiation between an optical device and an optical fiber, including a first layer that has a fiber socket formed by photolithographic masking and etching to extend through said first layer, and a second layer bonded to the first layer. The first layer may comprise substantially single-crystal silicon. An optical fiber is inserted into the fiber socket to align the optical fiber precisely within the fiber socket. In one embodiment the optical fiber is a single mode fiber, and an optical focusing element formed on the second layer is aligned with the core of the single mode fiber. The second layer may comprise glass having an index of refraction that approximately matches the index of the optical fiber, and an optical epoxy is used to affix the optical fiber into the fiber socket and fill the gaps between the end face of the fiber and the second layer.