Patent ID: 6979136
Filing Date: 2005-12-27
Classification: G02B

Abstract:
1. A fiber type optical module, wherein at least one optical device is provided at least either a light-receiving device or a light-emitting device, wherein a lensed fiber formed by integrating a lens system at least on one end side and said optical device are arranged on a common substrate and accommodated in a housing, and wherein said lensed fiber fixed in an optical fiber fixing groove formed on said substrate and optically connected with a corresponding optical device, wherein a first filter that transmits a light with a first predetermined wavelength, and reflects lights with a second predetermined wavelength and a third predetermined wavelength, which are different from said first predetermined wavelength, and a second filter that transmits the light with the second predetermined wavelength and reflects the light with the third predetermined wavelength, which is different from said second predetermined wavelength, are provided on a substrate, wherein on said substrate, a light-emitting device that emits the light with the third predetermined wavelength is provided in an incident side of said second filter, and a first optical fiber for leading the lights with the first predetermined wavelength and the second predetermined wavelength to the first filter, a second optical fiber for leading the light with the second predetermined wavelength reflected by the first filter to the second filter, and the third optical fiber for leading the light with the third predetermined wavelength emitted by the light-emitting device to the second filter are respectively formed in the lensed fiber, and wherein further the first optical fiber is fixedly inserted into a first optical fiber fixing groove formed in a direction intersecting the first filter, the second optical fiber is fixed in the second optical fiber fixing groove formed in a direction intersecting the first filter and the second filter, and the third optical fiber is fixedly inserted in the third optical fiber fixing groove provided in a direction intersecting the second filter, and on the substrate, the first light-receiving device for receiving the light with the first predetermined wavelength in the optical transmission side of the first filter is provided, and in the optical transmission side of the second filter, the second light-receiving device for receiving the light with the second predetermined wavelength is provided.