Optical power splitter including a zig-zag

Patent metadata

Field	Value
Publication number	US-9285544-B2
Application number	US-201114347366-A
Country	US
Kind code	B2
Filing date	Sep 30, 2011
Priority date	Sep 30, 2011
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

An optical power splitter includes a zig-zag and a reflector element associated with the zig-zag. The zig-zag is to split an input signal based on the reflector element, and output a plurality of split signals.

First claim

What is claimed is:

1. An optical power splitter comprising:
an input optical element to receive an input signal from an input fiber, wherein the input fiber is to contact the input optical element such that the input signal is received from the input fiber without traversing a gap;
a zig-zag to receive the input signal after traversing a gap between the input optical element and the zig-zag, wherein the zig-zag is to split the input signal and output n split signals;
a reflector element associated with the zig-zag to split the input signal, wherein the reflector element includes at least one discrete reflector, such that a total number of discrete reflectors associated with the reflector element is at most n−2;
an output optical element to couple each of the n split signals with a corresponding one of n output fibers; and
a passive alignment mechanical support to pass through a contiguous end portion of each of the input optical element, the zig-zag, and the output optical element to passively align and support the input optical element, the zig-zag, and the output optical element relative to each other via the respective contiguous end portion of each such that remaining portions of each are not in direct contact with the mechanical support, wherein the input optical element and output optical element are aligned parallel to each other and perpendicular to a path of the input signal by being extended perpendicularly from the respective contiguous end portions and away from the mechanical support, and the zig-zag is aligned obliquely to the path of the input signal and to the input and output optical elements by being extended obliquely from the respective contiguous end portion and away from the mechanical support.

2. The optical power splitter of claim 1 , wherein the input optical element and zig-zag are integrated as a one-piece monolithic input element to fix an orientation of the input optical element relative to the zig-zag.

3. The optical power splitter of claim 1 , wherein the input optical element, the zig-zag, and the output optical element each include an assembly alignment structure such that the input optical element, the zig-zag, and the output optical element are configured to be snapped together into passive alignment with each other.

4. An optical power splitter comprising:
an input optical element to receive an input signal from an input fiber, wherein the input fiber is to contact the input optical element such that the input signal is received from the input fiber without traversing a gap; and
a zig-zag to receive the input signal after traversing a gap, and split the input signal and output a plurality of split signals based on a reflector element,
wherein the input optical element and zig-zag are integrated as a one-piece monolithic input element to fix an orientation of the input optical element relative to the zig-zag by directly supporting a contiguous end portion of the zig-zag such that remaining portions of the zig-zag are not in direct contact with the input optical element, the zig-zag extending obliquely from the contiguous end portion directly supported by the input optical element; and
wherein the input optical element includes an input lens to allow the input signal to exit from the input optical element, traverse a gap, and enter the zig-zag.

5. The optical power splitter of claim 4 , wherein the reflector element comprises at least one coating on the zig-zag.

6. The optical power splitter of claim 4 , wherein the reflector element is associated with at least one reflectivity value such that the plurality of split signals are not equal in power.

7. The optical power splitter of claim 4 , wherein the zig-zag includes at least one relay mirror to output the plurality of split signals.

8. The optical power splitter of claim 4 , further comprising an output optical element to couple each of the plurality of split signals with a corresponding one of a plurality of output fibers, wherein at least one of the input optical element and the output optical element is formed of molded plastic, and wherein the input optical element and output optical element are aligned parallel to each other and perpendicular to a path of the input signal, and the zig-zag is aligned obliquely to the path of the input signal and to the input and output optical elements.

9. A method comprising:
passing an input signal from an input lens of an input optical element, across a gap, to enter a zig-zag, wherein the input signal is received from an input fiber that is to contact the input optical element such that the input signal is received from the input fiber without traversing a gap, and wherein a contiguous end portion of the zig-zag, toward where the input signal is received, is directly supported to align the zig-zag obliquely to a path of the input signal, without other portions of the zig-zag being directly supported;
splitting an input signal using the zig-zag associated with a reflector element including at least one discrete reflector to split the input signal; and
outputting n split signals based on the zig-zag, wherein a total number of discrete reflectors associated with the reflector element is at most n−2.

10. The method of claim 9 , further comprising coupling the input fiber to the input optical element to transmit the input signal from the input fiber to the zig-zag based on an input lens element associated with the input optical element.

11. The method of claim 9 , further comprising splitting the input signal into four split signals based on a total of one reflector associated with one reflectivity value.

12. The method of claim 9 , wherein the input signal is to be provided by a one-dimensional array of input fibers, and wherein each of the n split signals is to be provided as a one-dimensional array of output fibers.

13. The method of claim 9 , further comprising coupling a plurality of output fibers to an output optical element to transmit the n split signals from the zig-zag based on an output lens element associated with the output optical element, wherein the input optical element and output optical element are aligned parallel to each other and perpendicular to a path of the input signal, and the zig-zag is aligned obliquely to the path of the input signal and to the input and output optical elements.

Assignees

• Panotopoulos Georgios
• Tan Michael Renne Ty
• Rosenberg Paul Kessler
• Mathai Sagi Varghese
• Sorin Wayne V
• Patra Susant K
• Hewlett Packard Entpr Dev Lp

Inventors

• Panotopoulos Georgios
• Tan Michael Renne Ty
• Rosenberg Paul Kessler
• Mathai Sagi Varghese
• Sorin Wayne V
• Patra Susant K

Classifications

• G02B6/29367

  Zigzag path within a transparent optical block, e.g. filter deposited on an etalon, glass plate, wedge acting as a stable spacer · CPC title

• G02B27/145 Primary

  having sequential partially reflecting surfaces · CPC title

• G02B27/1073

  characterized by manufacturing or alignment methods · CPC title

• G02B27/106

  for splitting or combining a plurality of identical beams or images, e.g. image replication · CPC title

• G02B6/2938 Primary

  for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM · CPC title