CN202230245U - Tunable filter structure - Google Patents

The utility model discloses a tunable filter structure, including input system, etalon group, accuse temperature structure and receiving system, etalon group is the cascade of thin slice thermo-optic etalon of arithmetic progression by a series of thickness and constitutes. The utility model discloses a set of thin slice thermo-optical etalon cascades, has realized carrying out the FSR tuning of broad in less temperature variation range to it needs very big temperature variation range just to realize FSR tuning and a series of problems that bring to have solved ultra-thin thermo-optical etalon.

A kind of tunable filtering chip architecture

Technical field

The utility model relates to optical-fibre communications field, relates in particular to a kind of tunable filtering chip architecture.

Background technology

In the optical communication field, in order to obtain bigger FSR (free spectral range), adopt ultra-thin etalon, the temperature through the control criterion tool changes its length and then the realization tuber function usually.For ultra-thin hot light standard tool since its FSR big with self thinner thickness so that need very big range of temperature could realize that FSR is tuning.

Summary of the invention

For overcoming the problems referred to above, the utility model proposes a kind of tunable filtering chip architecture, adopts the cascade of one group of hot light standard tool of thin slice, is implemented in the wavelength tuning that carries out broad in the less range of temperature.

For achieving the above object; The technical scheme that the utility model proposed is: a kind of tunable filtering chip architecture; Comprise input system, etalon group, temperature-control structure and receiving system, said etalon group is made up of the hot light standard tool of the thin slice cascade that a series of thickness are arithmetic progression.

Further, said input system can adopt two optical fiber structures, the easy normalization of its incident angle of light, and do not lose light intensity, also can improve hot ray velocity; Perhaps also can adopt beam-splitting structure, system is regulated more easily.This beam-splitting structure can be a coupling mechanism, also can be light splitting piece etc.

Further, said receiving system can be PD or receive collimating apparatus.

Further, this tunable filtering chip architecture also comprises a wavelength monitor system, introduces a specific light on the basis of the above and measures light path, to realize the Wavelength calibration of temperature control process.Preferably, this wavelength monitor system can be PD or receive collimating apparatus.

The beneficial effect of the utility model: a kind of tunable filtering chip architecture of the utility model, adopt the cascade of one group of hot light standard tool of thin slice, it is tuning to be implemented in the FSR that carries out broad in the less range of temperature.

Description of drawings

Fig. 1 is the multistage etalon synoptic diagram of the cascade structure shown in the utility model;

Fig. 2 is the transmission curve of the etalon of d for thickness shown in Figure 1;

Fig. 3 is multistage etalon shown in Figure 1 left side transmission peaks stacking diagram;

Fig. 4 is the tunable filtering chip architecture embodiment one of the utility model;

Fig. 5 is the tunable filtering chip architecture embodiment two of the utility model;

Fig. 6 is the tunable filtering chip architecture embodiment three of the utility model;

Fig. 7 is the tunable filtering chip architecture embodiment four of the utility model.

Label declaration: 1 receiving system; 2 temperature-control structures; 3 etalon groups; 4 coupling mechanisms; 5 optical fiber; 6 coupling mechanisms; 7 wavelength monitor systems; 8 light splitting pieces.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the utility model is further specified.

Be illustrated in figure 6 as the embodiment three of the utility model, on the basis of above-mentioned each structure, introduce a specific light again and measure light path, add a wavelength monitor system 7, to realize the Wavelength calibration in the temperature control process.Preferably, this wavelength monitor system 7 can be PD or receive collimating apparatus.

Be illustrated in figure 7 as the embodiment four of the utility model, its input system is a component mating plate 8 cascade beam-splitting structures, and this structure can make light intensity weaken a little equally, thereby has reduced sensitivity, but adopts this structure, and system regulates will be convenient, and efficient is higher.

Although specifically show and introduced the utility model in conjunction with preferred embodiment; But the those skilled in the art should be understood that; In the spirit and scope of the utility model that does not break away from appended claims and limited; In form with details on various variations that the utility model is made, be the protection domain of the utility model.