An optical coupling device includes a first receiving chip having a first region on one end and a second region on another end side. A first emitting chip is disposed on the first region. A second receiving chip has a third region on one end and a fourth region on another end. A second emitting chip is disposed on the fourth region. The first and third regions are adjacent, and the second and fourth regions are adjacent. A first connection portion is disposed on the second region and is electrically connected to the second light emitting chip through a bonding wire. A second connection portion is disposed in the third region and is electrically connected to the first light emitting chip through a bonding wire.