Optical multiplexer/demultiplexer and manufacturing method...

Details Optical multiplexer/demultiplexer and manufacturing method... Optical multiplexer/demultiplexer and manufacturing method...

2007-06-05

2007-06-05

Connelly-Cushwa, Michelle (Department: 2874)

Optical waveguides

With optical coupler

Plural

C385S019000

Reexamination Certificate

active

11345941

ABSTRACT:
An optical multiplexer/demultiplexer and a manufacturing method thereof are disclosed, wherein a core is arranged on each side of a filter element, and the light is caused to enter the filter element from one of the cores without using a collimator lens. The loss of the transmitted light is reduced by optimizing the axial shift amount of the cores on the two sides. The optical axes of the cores21, 23located on both sides of the filter element26are displaced by δ. This axial shift amount δ is determined as A(λ)•T•tan θ, where A(λ) is a predetermined coefficient depending on the wavelength of the incident light, θ the angle between the optical axis of the incident light and the normal to the entrance surface of the filter element, and T the thickness in terms of a medium depending on the refractive indexes of the high refractive index layer and the low refractive index layer making up a multilayer film of the filter element.

REFERENCES:
patent: 4693544 (1987-09-01), Yamasaki et al.
patent: 5144498 (1992-09-01), Vincent
patent: 5234772 (1993-08-01), Oguchi et al.
patent: 5332535 (1994-07-01), Oguchi et al.
patent: 5479547 (1995-12-01), Kunikane et al.
patent: 6215924 (2001-04-01), Hulse et al.
patent: 6295393 (2001-09-01), Naganuma
patent: 1 014 125 (2000-06-01), None
patent: 8-190026 (1996-07-01), None
patent: 2608633 (1997-02-01), None
patent: 10-123437 (1998-05-01), None
Patent Abstracts of Japan 10123437.
Patent Abstracts of Japan 08190026.
European Search Report dated Apr. 20, 2006.

Affiliated with

Also associated with

Rating

Optical multiplexer/demultiplexer and manufacturing method... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical multiplexer/demultiplexer and manufacturing method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical multiplexer/demultiplexer and manufacturing method... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3830712