Patent ID: 9696503
Date: 2017-07-04
CPC Classifications: G02B,H01S,H04B

Claim:
1. A multi-channel transmitter optical subassembly (TOSA), the TOSA comprising: a plurality of lasers; a housing including a plurality of sidewalls, the plurality of sidewalls forming a compartment defined by an inner surface therein, the compartment including a light path, the light path being optically coupled to each of the plurality of lasers and extending laterally from a first end to a second end of the housing along a first major axis; a focus lens disposed at the second end of the housing configured to receive at least a portion of light emitted by the plurality of lasers via the light path and to output a focused light beam; and an optical coupling receptacle coupled to the second end of the housing, the optical coupling receptacle having a cavity to receive at least a portion of a fiber and couple the light path to the fiber and an optical isolator disposed within the cavity adjacent the housing to receive the focused light beam and launch the focused light beam in a forward direction into the fiber while reducing backreflection, wherein a center line of the fiber within the cavity of the optical coupling receptacle is offset from a center of the focus lens, and wherein the offset passively compensates for beam displacement introduced by the optical isolator such that the focused light beam is launched substantially into a center of the fiber.