CN2469469Y

CN2469469Y - Photo-communication network passive component in model of multiband transmitting or reflecting

Info

Publication number: CN2469469Y
Application number: CN 01209447
Authority: CN
Inventors: 杨树梅; 黄颖
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-20
Filing date: 2001-03-20
Publication date: 2002-01-02
Anticipated expiration: 2011-03-20

Abstract

The utility model discloses a passive device of multi-frequency band transmission or the reflection optical communication network and comprises an uropatagia. The two sides of the uropatagia are respectively coated with N layers; each even layer alternates with each odd layer; the N is a positive integer being bigger than 1; the optical thickness of the even and the odd film layers are the same, The multi-spectral passband or reflecting band of the equal spectrum width in the equal wavelength interval is provided with the extremely good optical quality and the chemical stability, thereby having the broad application future, being especially suitable for the application of the broadband optical communication network, and enabling the existing optical communication capacity increasing hundreds of times or larger.

Description

Multiband transmission or reflection type optical communication network passive device

The utility model belongs to multiband transmission or the reflection type optical communication passive device in the optical communication field.

Before the utility model, the passive device that is used for the optical communication network, generally all adopt the single-band interference filter, for example the U.S. famous professor MacLeod (H.A.Macleos Thin-filmOpticol filters 1984 p274 Fig. 7 .17) delivers the single-band interference filter of (introduction).As shown in Figure 1: form by substrate 1, low-

refraction coating materials

2,4,6,8,10,12,14,16 and high

index film material

3,5,7,9,11,13,15.Hanging down the rete that high index film material distributes alternately at the same side of substrate 1 coating N layer even number and odd number, is typical two-chamber method---white structure.Wherein 5 and 13 be 1/2 go into the layer or 1/2 multiple of going into.This structure again can more a plurality of series connection, cost an arm and a leg to reach desired spectral width and other performance requirements, to implement, simultaneously, the interference filter of the single wavelength of this single-band is made optical communication device, and the capacity of optical communication is little, frequency is low, jamproof poor performance.

In order to overcome above-mentioned shortcoming, the purpose of this utility model is to expand the optical communication wave band, increases the optical communication capacity, for optical communication is realized the novel optical communication network passive device of Design of digital one class.

Detailed content of the present utility model is by substrate 17, high

refractive index layer

18,20,22,24,26,28 as shown in Figure 2, and low-

index film

19,21,23,25,27,29 is formed.At the both sides of substrate 17 difference coating N layer, even number rete and odd number rete distribute alternately, and the optical thickness of the strange two kinds of retes of idol is all identical, and N is the positive integer greater than 1, and substrate 17 can be selected the transparent material of organic or inorganic.

The principle explanation: the selection of the refractive index of substrate 17 is depended in the selection of N tunic refractive index, and be complementary with the refractive index of substrate 17, the foundation of this structure and realization, can obtain many passbands spike interference filter, the super spike interference filter of many passbands and the super narrowband reflection type of many passbands interference filter, the multispectral passband or the zone of reflections of spectral width are promptly arranged at interval etc. the equiwavelength, and can obtain desired transmitance or reflectivity.

Good effect of the present utility model: have fabulous designed optical property, can obtain the centre wavelength of the passband of desired many passbands spectral width and each narrow bandpass spectral width (can reach the 1-2 dust) and stabilizer pole.Chemical stability is good, moisture resistance is wet, high-low temperature resistant (196 ℃～+ 400 ℃), firm and durable, long service life, this optical communication passive device has fabulous application future, especially is suitable for the application of broadband optical communication network, and it can make existing optical communication capacity improve 1,100 times or higher.

Description of drawings: Fig. 1 is the structural representation of prior art, and Fig. 2 is a structural representation of the present utility model, and Figure of abstract also adopts Fig. 2.

Most preferred embodiment: substrate 17 adopts high molecular polymerization organic transparent material or optical glass, and high index film material adopts titania, and the low-refraction coating materials is selected silicon dioxide, and the rete N that substrate 17 both sides distribute alternately respectively selects 10 layers.

Claims

1, multiband transmission or reflection type optical communication network passive device, be that the rete that coating distributes alternately by substrate with on substrate forms, it is characterized in that the utility model is by substrate 17, high refractive index layer 18,20,22,24,26,28, low-index film 19,21,23,25,27,29 is formed, at the both sides of substrate 17 difference coating N layer, even number rete and odd number rete distribute alternately, the optical thickness of the strange two kinds of retes of idol is all identical, N is the positive integer greater than 1, and substrate 17 can be selected the transparent material of organic or inorganic.