Connection apparatus for parallel optical interconnect module and parallel optical interconnect module using the same

• US 7,220,065 B2
• Filed: 08/24/2004
• Issued: 05/22/2007
• Est. Priority Date: 12/24/2003
• Status: Expired due to Fees

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Ahn, Seung Ho, Han, Sang Pil, Kee, Chul Sik, Cho, In Kui, Sung, Hee Kyung
• Primary Examiner(s): Doan; Jennifer
• Application Number:
  US10/923,853
• Publication Number:
  US 20050141823A1
• Time in Patent Office: 1,001 Days
• Field of Search: 385/53, 385/88, 385/89
• US Class Current: 385/89
• CPC Class Codes: G02B 6/4204 the coupling comprising intermediate optical elements, e.g. lenses, holograms encapsulated active devices H01S5/02208, H01L33/52
• CPC Class Codes: G02B 6/4214 the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device G02B6/4246 takes precedence
• CPC Class Codes: G02B 6/4249 comprising arrays of active devices and fibres
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48137 the bodies being arranged next to each other, e.g. on a common substrate
• CPC Class Codes: H01L 2224/49175 Parallel arrangements
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/3011 Impedance
• CPC Class Codes: H01L 2924/30111 matching

Abstract

Provided is an optical connection apparatus for a parallel optical interconnect module and a parallel optical interconnect module using the same for reducing a coupling loss generated due to an alignment error when coupled with an optical fiber, comprising: a 2D reflector in a prism shape and having at least two rows of cylinder type lens attached thereto; a 2D optical waveguide having at least two layers of core arrays; at least two rows of 2D optical benches; and a 2D ferrule capable of loading at least two layers of optical fibers so as to facilitate the fixing of the 2D optical waveguide for optical interconnection.

Claims

1. A parallel optical interconnect module comprising:

a substrate on which an electrode pad and a given electric circuit pattern are formed;

a printed circuit board having a heat spreader in a trench on the substrate;

a 2D optical bench provided on the substrate and in which the trench is formed;

a light source provided in the trench to be constituted in at least two rows, so as to generate an optical signal and output the optical signal to an exterior through an opening;

a driver provided on the substrate to drive the light source according to an electric signal supplied through the electrode pad;

a 2D reflector designed in a prism shape and having at least two rows of cylinder type lens attached thereto to change paths of at least two rows of optical signals emitted from the light source;

a 2D optical waveguide having at least two layers of core arrays formed so as to direct light reflected from the 2D reflector; and

a 2D ferrule capable of loading at least two layers of optical fibers supporting the 2D optical waveguide so as to transmit the light transferred from the 2D optical waveguide to an optical fiber.

4. The parallel optical interconnect module as claimed in claim 1, wherein the light source is a vertical cavity surface emitting laser (VCSEL).

6. The parallel optical interconnect module as claimed in claim 1, wherein the 2D ferrule attached to the 2D optical waveguide is fixed by an adapter.

7. The parallel optical interconnect module as claimed in claim 1, wherein a clad layer of the 2D optical waveguide is composed of a polymer, and the core of the 2D optical waveguide is composed of epoxy.

8. The parallel optical interconnect module as claimed in claim 7, wherein the core has any one of a uniform shape and a funnel shape whose one end portion narrows or widens relative to the other end portion.

9. The parallel optical interconnect module as claimed in claim 6, wherein the 2D ferrule includes two layers of holes for the optical fiber at its middle portion with which the 2D optical waveguide is coupled, guide holes at both sides of the optical fiber hole into which a guide pin for connection with the adapter is inserted, and a fixing hole provided to an upper portion of the optical fiber hole so as to fix the optical waveguide.

10. The parallel optical interconnect module as claimed in claim 9, wherein epoxy is provided in the fixing hole so as to fix the optical fiber.

11. The parallel optical interconnect module as claimed in claim 1, wherein the 2D optical bench is formed of a silicon material.

2. A parallel optical interconnect module comprising:

a substrate on which an electrode pad and a given electric circuit pattern are formed;

a printed circuit board having a heat spreader formed by the formation of a trench formed on a part of the substrate;

a 2D optical bench provided on the substrate and in which the trench is formed;

a photodetector provided in the trench formed in the 2D optical bench to be constituted in at least two rows, so as to detect an optical signal transferred from an exterior through an opening;

a receiver provided on the substrate so as to amplify an electric signal supplied from the photodetector and to output the electric signal through the electrode pad;

a 2D reflector designed in a prism shape and having at least two rows of cylinder type lens attached thereto to change paths of at least two rows of optical signal incident from an exterior;

a 2D optical waveguide having at least two layers of core arrays formed so as to direct light reflected from the 2D reflector; and

a 2D ferrule capable of loading at least two layers of optical fibers supporting the 2D optical waveguide so as to transmit the light from an optical fiber to the 2D optical waveguide.

5. The parallel optical interconnect module as claimed in claim 2, wherein the photodetector is a photo diode.

3. A parallel optical interconnect module comprising:

a substrate on which an electrode pad and a given electric circuit pattern are formed;

a printed circuit board having a heat spreader formed by the formation of a trench formed on a part of the substrate;

a 2D optical bench provided on the substrate and in which the trench is formed;

a photodetector and a light source provided in the trench formed in the 2D optical bench to be respectively constituted in at least one row, wherein the light source generates an optical signal and outputs the generated optical signal to an exterior through an opening and the photodetector detects the optical signal transferred from the exterior through the opening;

a driver and a receiver provided on the substrate, wherein the driver drives the light source according to an electric signal supplied through the electrode pad and the receiver amplifies the electric signal supplied from the photodetector to output the amplified electric signal through the electrode pad;

a 2D reflector designed in a prism shape and having at least two rows of cylinder type lens attached thereto to change a path of the optical signal outputted from the light source or inputted to the photodetector;

a 2D optical waveguide having at least two layers of core arrays formed so as to direct the light reflected from the 2D reflector; and

a 2D ferrule capable of loading at least two layers of optical fibers supporting the 2D optical waveguide so as to transmit the light from the 2D optical waveguide to an optical fiber.

12. An optical connection apparatus for a parallel optical interconnect module, comprising:

a 2D reflector designed in a prism shape which has at least two rows of cylinder type lens attached thereto to change paths of optical signals emitting in at least two rows;

a 2D optical waveguide having at least two layers of core arrays formed so as to direct light reflected from the 2D reflector; and

a 2D ferrule capable of loading at least two layers of optical fibers supporting the 2D optical waveguide so as to transmit the light from the 2D optical waveguide to an optical fiber.

13. The optical connection apparatus as claimed in claim 12, wherein a clad layer of the 2D optical waveguide is formed of a polymer, and the core of the 2D optical waveguide is formed of epoxy.

14. The connection apparatus as claimed in claim 12, wherein the core has any one of a uniform shape and a funnel shape whose one end portion narrows or widens relative to the other end portion.