US 2003/0118294 A1 · Optical package substrate, optical device, optical module, and method for molding optical package substrate

Abstract

Although press formation is a process capable of mass-producing components of the same shape at low cost, conventional die processing using a microgrinder has a poor applicability because it can only do as much as molding V grooves for guiding optical fibers. Microdischarge machining is employed to obtain a die that has been difficult to obtain with a grinding process using a microgrinder, and an optical package substrate is produced by press formation using such a die. Thus, an optical fiber, an optical waveguide, a lens, an isolator, an optical filter and a light receiving/emitting element can be mounted by passive alignment, whereby optical devices and optical modules with multiple functions can be mass-produced at low cost.

Claims60

Dependent claims

An optical package substrate for mounting an optical component and/or an optical element thereon, comprising:

an optical-fiber-positioning first guide section for fixing an optical axis of an optical fiber mounted on the optical package substrate, the first guide section being formed as a groove extending on a surface of the optical package substrate from a predetermined side surface thereof to a predetermined location thereon;
and
a lens-positioning second guide section for fixing an optical axis of a lens mounted on the optical package substrate so that the optical axis of the lens is aligned with that of the optical fiber, the second guide section being formed as a groove extending on the surface of the optical package substrate from another side surface thereof, opposite to the predetermined side surface, to the predetermined location.

An optical package substrate for mounting an optical component and/or an optical element thereon, comprising:

an optical-fiber-positioning first guide section for fixing an optical axis of an optical fiber mounted on the optical package substrate, the first guide section being formed as a groove extending on a surface of the optical package substrate from a predetermined side surface thereof to a predetermined location thereon;
an optical-component-positioning second guide section for fixing an optical axis of an optical component mounted on the optical package substrate so that the optical axis of the optical component is aligned with that of the optical fiber, the second guide section being formed as a depression extending on the surface of the optical package substrate in a direction perpendicular to the optical axis of the optical fiber;
and
a lens-positioning third guide section for fixing an optical axis of a lens mounted on the optical package substrate so that the optical axis of the lens is aligned with those of the optical fiber and the optical component, the third guide section being formed as a groove extending on the surface of the optical package substrate.

1 more element

An optical package substrate for mounting an optical component and/or an optical element thereon, comprising:

an optical-fiber-positioning first guide section for fixing an optical axis of a first optical fiber mounted on the optical package substrate, the first guide section being formed as a groove extending on a surface of the optical package substrate from a predetermined side surface thereof to a predetermined location thereon;
an optical-fiber-positioning second guide section for fixing an optical axis of a second optical fiber mounted on the optical package substrate so that the optical axis of the second optical fiber is aligned with that of the first optical fiber, the second guide section being formed as a groove extending on the surface of the optical package substrate from another side surface thereof, opposite to the predetermined side surface, to the predetermined location;
an optical-fiber-positioning third guide section for fixing an optical axis of a third optical fiber mounted on the optical package substrate, the third guide section being formed as a groove extending on the surface of the optical package substrate in parallel to the first and second guide sections;
and
an optical-component-positioning fourth guide section for fixing an optical axis of an optical component mounted on the optical package substrate so that the optical axis of the optical component is aligned with those of the first and second optical fibers, the fourth guide section being formed as a depression extending on the surface of the optical package substrate between the first guide section and the second guide section in a direction perpendicular to the optical axes of the first and second optical fibers.

2 more elements

An optical package substrate for mounting an optical component and/or an optical element thereon, comprising:

a waveguide section corresponding to a predetermined optical waveguide core pattern, the waveguide section being formed as a groove extending on a surface of the optical package substrate;
an optical-component-positioning first guide section for fixing an optical axis of an optical component mounted on the optical package substrate so that the optical axis of the optical component is aligned with that of an optical waveguide formed in the waveguide section, the first guide section being formed as a depression extending on the surface of the optical package substrate in a direction perpendicular to the optical axis of the optical waveguide formed in the waveguide section;
a lens-positioning second guide section for fixing an optical axis of a lens mounted on the optical package substrate so that the optical axis of the lens is aligned with that of the optical waveguide formed in the waveguide section, the second guide section being formed as a groove extending on the surface of the optical package substrate;
a first stage for positioning a light emitting element, the first stage being located on the surface of the optical package substrate so that an optical axis of the light emitting element is aligned with that of the optical waveguide formed in the waveguide section;
and
a second stage for positioning a light receiving element, the second stage being located on the surface of the optical package substrate so that an optical axis of the light receiving element is aligned with that of the optical waveguide formed in the waveguide section.

3 more elements

An optical device, comprising an optical package substrate with an optical component and/or an optical element mounted thereon, wherein:

the optical package substrate comprises:
an optical-fiber-positioning first guide section for fixing an optical axis of a first optical fiber mounted on the optical package substrate, the first guide section being formed as a groove extending on a surface of the optical package substrate from a predetermined side surface thereof to a predetermined location thereon;
an optical-fiber-positioning second guide section for fixing an optical axis of a second optical fiber mounted on the optical package substrate so that the optical axis of the second optical fiber is aligned with that of the first optical fiber, the second guide section being formed as a groove extending on the surface of the optical package substrate from another side surface thereof, opposite to the predetermined side surface, to the predetermined location;
an optical-fiber-positioning third guide section for fixing an optical axis of a third optical fiber mounted on the optical package substrate, the third guide section being formed as a groove extending on the surface of the optical package substrate in parallel to the first and second guide sections;
and an optical-component-positioning fourth guide section for fixing an optical axis of an optical component mounted on the optical package substrate so that the optical axis of the optical component is aligned with those of the first and second optical fibers, the fourth guide section being formed as a depression extending on the surface of the optical package substrate between the first guide section and the second guide section in a direction perpendicular to the optical axes of the first and second optical fibers;
and
the optical component is affixed to the fourth guide section of the optical package substrate, the first optical fiber is affixed to the first guide section while being abutted against the optical component, the second optical fiber is affixed to the second guide section while being abutted against the optical component, and the third optical fiber is affixed to the third guide section.

4 more elements

An optical module, comprising an optical package substrate with an optical component and/or an optical element mounted thereon, wherein:

the optical package substrate comprises:
a waveguide section corresponding to a predetermined optical waveguide core pattern, the waveguide section being formed as a groove extending on a surface of the optical package substrate;
an optical-component-positioning first guide section for fixing an optical axis of an optical component mounted on the optical package substrate so that the optical axis of the optical component is aligned with that of an optical waveguide formed in the waveguide section, the first guide section being formed as a depression extending on the surface of the optical package substrate in a direction perpendicular to the optical axis of the optical waveguide formed in the waveguide section;
a lens-positioning second guide section for fixing an optical axis of a lens mounted on the optical package substrate so that the optical axis of the lens is aligned with that of the optical waveguide formed in the waveguide section, the second guide section being formed as a groove extending on the surface of the optical package substrate;
a first stage for positioning a light emitting element, the first stage being located on the surface of the optical package substrate so that an optical axis of the light emitting element is aligned with that of the optical waveguide formed in the waveguide section;
and a second stage for positioning a light receiving element, the second stage being located on the surface of the optical package substrate so that an optical axis of the light receiving element is aligned with that of the optical waveguide formed in the waveguide section;
and
an isolator or an optical filter is affixed to the first guide section of the optical package substrate, the lens is affixed to the second guide section, the light emitting element is affixed to the first stage, the light receiving element is affixed to the second stage, and the waveguide section is filled with a core material having a higher refractive index than that of the optical package substrate, after which a predetermined substrate is attached to the optical package substrate so as to cover the waveguide section by using an adhesive having a lower refractive index than that of the core material.

5 more elements

Dependencies are inferred from the claim text.

Optical package substrate, optical device, optical module, and method for molding optical package substrate

Life of this patent

Optical package substrate, optical device, optical module, and method for molding optical package substrate

Life of this patent

Abstract

Claims60