Patent ID: 6371664
Filing Date: 2002-04-16
Classification: G02B,H01L

Abstract:
A photoelectric device comprising:a package comprising a case member and a cap member which is secured on said case member, said package including a main body portion, which is provided with a main hollow space, and a guide portion which is provided with a guide hollow space; a support substrate secured over an inner bottom of said case member in said main hollow space of the main body portion of the package; said support substrate having a main surface, which faces said main hollow space, a mounting portion, which is provided at a portion of said main surface, a first groove, which is formed in said main surface and is extended from said mounting portion of the main surface to an edge of said main surface in a direction toward said guide hollow space of the guide portion of the package, and a second groove which is formed in said main surface and is extended across said first groove; said first groove having one end thereof terminating on the side of said mounting portion and the other end thereof terminating on the side of said edge of the main surface; said second groove having a depth deeper than that of said first groove so that the crossed portion, where said first and second grooves are intersected each other, has the same depth as said second groove; a photoelectric conversion element secured on said mounting portion of the support substrate, said photoelectric conversion element having an optical coupling surface portion which faces said one end of said first groove; an optical fiber extending from said main hollow space of the main body portion of the package toward an outside of the package through said guide hollow space of the guide portion of the package, said optical fiber having one end portion, which includes an utmost end face thereof optically coupled to said optical coupling surface portion of the photoelectric conversion element and is located in said main hollow portion, and another portion located in said guide hollow space; said optical fiber having a jacket coating layer which covers said another portion thereof, but leaves said one end portion thereof uncovered; said one end portion of the optical fiber fitted in said first groove and secured in said first groove with a first adhesive layer which is located in a restricted region of said first groove between said crossed portion of the first and second grooves and said other end of the first groove; said jacket coating layer of the another portion of the optical fiber fitted in said guide hollow space and secured with a second adhesive layer to said guide portion of the package; and a protective coating layer of coating material transparent to light transmitted by said optical fiber, provided in said main hollow space of the package to cover said photoelectric conversion element and said one end portion of the optical fiber which are located on said main surface of the support substrate.