CN201075134Y - Apyrexia array waveguide grating type wavelength division multiplexer - Google Patents

Abstract

The utility model provides an athermal array waveguide grating-typed wavelength division multiplexer with 80 channels and 50GHz channel spacing, comprising a light comb filter (50GHz) and two athermal AWG filters (100GHZ, 1 multiplied by 40); furthermore, the utility model also provides an athermal array waveguide grating-typed wavelength division multiplexer with 160 channels and 25GHz channel spacing, comprising a light comb filter (25GHz) and four athermal AWG filters (100GHZ, 1 multiplied by 40); light is split and combined according to parity by the light comb filter and is further split and combined by the athermal AWG filters (100GHz), thus reaching the performance requirement of the wavelength division multiplexer with the channel spacing of 50GHz or 25GHz; no heating circuits or controllers are required in the process, thus greatly reducing manufacture cost.

Description

Non-heat array wave guide grating type wavelength division multiplexer

Technical field

The utility model relates to a kind of DWDM wavelength division multiplexer, relates in particular to a kind of non-heat array wave guide grating type wavelength division multiplexer of small interchannel spaces.

Background technology

At present, the habitual wavelength division multiplexer of dwdm system comprises Thin Film Filter type (Thin FilmFilter) and arrayed waveguide grating type AWG (being called for short AWG, Array Waveguide Grating) module etc. usually.Wherein, become the main flow in market based on the DWDM module of AWG type.Traditional AWG is based on the quartz glass optical waveguide of the silicon base of semiconductor technology manufacturing, because the refractive index of quartz glass changes with temperature, so the centre wavelength of transmitting optical signal also can be drifted about with temperature, for fear of this situation, just must adopt heater circuit and temperature control equipment, increase the complicacy and the manufacturing cost of AWG module.And non-heat array wave guide grating AWG (Athermal AWG, hereinafter to be referred as Heatless AWG) a kind of its temperature coefficient of employing silicones different with quartz glass, utilize the thermal compensation principle to make temperature reduce to 1/10th of original value to the influence of centre wavelength, need not heater circuit and controller, its manufacturing cost is greatly reduced.But according to state-of-the art, no matter be hot type or do not have pattern of fever AWG that because the drift of centre wavelength, adjacent influence of crosstalking can only be accomplished the 100GHz channel spacing, can't realize 50GHz or 25GHz channel spacing.For example, no pattern of fever AWG for 160 passage 25GHz channel spacings, when setting the 1st communication wavelengths coincidence of the 1st output wavelength and ITU-T G694.1 standard, by every passage drift 1.1pm, then the drift value of the 160th passage reaches 176pm, can not satisfy the performance requirement of the wavelength division multiplexer of 25GHz channel spacing.

The utility model content

For overcoming above shortcoming, the utility model provides a kind of non-heat array wave guide grating type wavelength division multiplexer of 80 passage 50GHz channel spacings.

Another goal of the invention of the present utility model provides a kind of non-heat array wave guide grating type wavelength division multiplexer of 160 passage 25GHz channel spacings.

For reaching first goal of the invention, the utility model provides a kind of non-heat array wave guide grating type wavelength division multiplexer of 80 passage 50GHz channel spacings, comprise 1 * 2 optical comb filter of a 50GHz and two 1 * 40 100GHz Heatless AWG wave filter, described optical comb filter is provided with one road input end and two-way output terminal, its input end is used for input channel, and to be spaced apart the 50GHz wavelength be λ 1, λ 2, λ 3, λ 80 closes wave optical signal, its output terminal forms by the odd and even number partial wave respectively that one road odd number closes wave optical signal and one road even number closes wave optical signal, wherein odd number closes the wave optical signal delivery channel to be spaced apart the 100GHz wavelength is λ 1, λ 3, λ 5, λ 79, and it is 40 single channels by one described 1 * 40 100Hz Heatless AWG wave filter partial wave again that this odd number closes wave optical signal; Even number close the wave optical signal delivery channel be spaced apart the 100GHz wavelength be λ 2, λ 4, λ 6,,,, λ 80, it is 40 single channels by another 100Hz Heatless AWG wave filter partial wave of described 1 * 40 that this even number closes wave optical signal, two 1 * 40 100Hz Heatless AWG wave filter export jointly form the continuous λ 1 of wavelength, λ 2, λ 3,,,, λ 80 channel spacings are 80 single pass light signals of 50GHz; Because light path is reversible, described wavelength continuous channel is spaced apart 80 single pass light signals of 50GHz and divides two groups by odevity, every group is respectively closed ripple by one described 1 * 40 100GHz Heatless AWG wave filter along opposite light path, forming a path channels is spaced apart the 100GHz odd number to close the wave optical signal wavelength is λ 1, λ 3, λ 5, a λ 79 and a path channels are spaced apart the 100GHz even number, and to close the wave optical signal wavelength be λ 2, λ 4, λ 6, λ 80, this odd even two-way closes wave optical signal again after the optical comb filter of 50GHz closes ripple, forms the continuous λ 1 of 80 wavelength of channel spacing of 50GHz, λ 2, λ 3, λ 4, the wave optical signal 1101 that closes of λ 80 is exported.

For reaching second goal of the invention, the utility model provides a kind of non-heat array wave guide grating type wavelength division multiplexer of 160 passage 25GHz channel spacings, comprise 1 * 4 optical comb filter of a 25GHz and four 1 * 40 100GHz Heatless AWG wave filter, described optical comb filter is provided with one road input end and four road output terminals, its input end is used for input channel, and to be spaced apart the 25GHz wavelength be λ 1, λ 2, λ 3, λ 160 closes wave optical signal, its output terminal first via is that odd number closes the wave optical signal delivery channel to be spaced apart the 100GHz wavelength be λ 1, λ 5, λ 9, λ 157, the second the tunnel is that even number closes the wave optical signal delivery channel to be spaced apart the 100GHz wavelength be λ 2, λ 6, λ 10, λ 158, Third Road is that odd number closes the wave optical signal delivery channel to be spaced apart the 100GHz wavelength be λ 3, λ 7, λ 11, λ 159, the four the tunnel is that even number closes the wave optical signal delivery channel to be spaced apart the 100GHz wavelength be λ 4, λ 8, λ 12, λ 160, it is 40 single channels by one described 1 * 40 100Hz Heatless AWG wave filter partial wave respectively that wave optical signal is closed on each road, four 1 * 40 100Hz Heatless AWG wave filter is exported formation wavelength continuous channel jointly and is spaced apart 160 single pass light signals of 25GHz, because light path is reversible, these wavelength continuous channels are spaced apart 25GHz160 single pass light signal and divide four groups by odevity, every group is respectively closed ripple by one described 1 * 40 100GHz Heatless AWG wave filter along opposite light path, forming the described first via is that odd number closes wave optical signal, the second the tunnel is that even number closes wave optical signal, Third Road is that odd number closes wave optical signal, the four the tunnel is that even number closes wave optical signal, this four road odd couplings wave optical signal after the optical comb filter of described 25GHz closes ripple, forms 160 wavelength X 1 of 25GHz channel spacing again, λ 2, λ 3, λ 4, the wave optical signal that closes of λ 160 is exported.

The non-heat array wave guide grating type wavelength division multiplexer of said structure, because the odevity partial wave that has effectively utilized 50GHz or 25GHz optical comb filter closes the feature that the partial wave of ripple and Heatless AWG closes ripple, make existing 100Hz Heatless AWG wave filter can realize that the partial wave of 50GHz 80 passages closes the effect that the partial wave of ripple and 25GHz160 passage closes ripple, and entire device does not have heat fully, the advantage that cost is low.

Description of drawings

Fig. 1 represents the non-heat array wave guide grating type wavelength division multiplexer of 80 passage 50GHz channel spacings of the present utility model;

Fig. 2 represents the non-heat array wave guide grating type wavelength division multiplexer of 160 passage 25GHz channel spacings of the present utility model.

Embodiment

By the non-heat array wave guide grating type wavelength division multiplexer 10 of 80 passage 50GHz channel spacings shown in Figure 1, comprise 1 * 2 optical comb filter 11 of a 50GHz and two 1 * 40 100GHz Heatless AWG wave filter 12.At first, well-known, optical comb filter (Interleaver) is a kind of passive device, and in the serviceability temperature scope, centre wavelength is drifted about less than 2pm.This kind wave filter can be multiplexed into multipath light signal the more intensive at interval light signal of one path channels, conversely, because light path is reversible, an optical comb filter can demultiplex into one road intensive multiplexing optical signal of input the light signal of multichannel output again, no matter be multiplexing or during demultiplexing, always close ripple as multichannel input or multichannel output to carry out partial wave between odd number or the even number wavelength, during as one 1 * 2 in this example optical comb filter 11 demultiplexings, be provided with one road input end and two-way output terminal, its input end is used for input channel, and to be spaced apart the 50GHz wavelength be λ 1, λ 2, λ 3, λ 80 closes wave optical signal 1101, its output terminal forms by the odd and even number partial wave respectively that one road odd number closes wave optical signal 1102 and one road even number closes wave optical signal 1103, wherein odd number closes wave optical signal 1102 delivery channels to be spaced apart 100GHz odd number wavelength is λ 1, λ 3, λ 5, λ 79, and it is 40 single channels by one 1 * 40 100Hz Heatless AWG wave filter 12 partial waves again that this odd number closes wave optical signal 1102; Even number close wave optical signal 1103 delivery channels be spaced apart 100GHz even number wavelength be λ 2, λ 4, λ 6,,,, λ 80, it is 40 single channels by another 100Hz Heatless AWG wave filter 12 partial waves of 1 * 40 that this even number closes wave optical signal 1103, two 1 * 40 100Hz Heatless AWG wave filter, the 12 common outputs formation continuous λ 1 of wavelength, λ 2, λ 3,,,, λ 80 channel spacings are 80 single pass light signals of 50GHz; Because light path is reversible, the wavelength continuous channel is spaced apart 80 single pass light signals of 50GHz and divides two groups by odevity, every group is respectively closed ripple by one 1 * 40 100GHz Heatless AWG wave filter 12 along opposite light path, forming a path channels is spaced apart the 100GHz odd number to close wave optical signal 1102 wavelength is λ 1, λ 3, λ 5, a λ 79 and a path channels are spaced apart the 100GHz even number, and to close wave optical signal 1103 wavelength be λ 2, λ 4, λ 6, λ 80, this odd even two-way closes wave optical signal again after the optical comb filter 11 of 50GHz closes ripple, forms the continuous λ 1 of 80 wavelength of channel spacing of 50GHz, λ 2, λ 3, λ 4, the wave optical signal 1101 that closes of λ 80 is exported.

Non-heat array wave guide grating type wavelength division multiplexer 20 by 160 passage 25GHz channel spacings shown in Figure 2, comprise 1 * 4 optical comb filter 21 of a 25GHz and four 1 * 40 100GHz Heatless AWG wave filter 22, optical comb filter 21 is provided with one road input end and four road output terminals, its input end is used for input channel, and to be spaced apart the 25GHz wavelength be λ 1, λ 2, λ 3, λ 160 closes wave optical signal 2100, its output terminal first via is that odd number closes wave optical signal 2101 delivery channels to be spaced apart the 100GHz wavelength be λ 1, λ 5, λ 9, λ 157, the second the tunnel is that even number closes wave optical signal 2102 delivery channels to be spaced apart the 100GHz wavelength be λ 2, λ 6, λ 10, λ 158, Third Road is that odd number closes wave optical signal 2103 delivery channels to be spaced apart the 100GHz wavelength be λ 3, λ 7, λ 11, λ 159, the four the tunnel is that even number closes wave optical signal 2104 delivery channels to be spaced apart the 100GHz wavelength be λ 4, λ 8, λ 12, λ 160, it is 40 single channels by one 1 * 40 100Hz Heatless AWG wave filter 22 partial waves respectively that wave optical signal is closed on each road, the common output of four 1 * 40 100Hz Heatless AWG wave filter 22 forms the wavelength continuous channel and is spaced apart 160 single pass light signals of 25GHz, because light path is reversible, these wavelength continuous channels are spaced apart 25GHz160 single pass light signal and divide four groups by odevity, every group is respectively closed ripple by one 1 * 40 100GHz Heatless AWG wave filter 22 along opposite light path, forming the first via is that odd number closes wave optical signal 2101, the second the tunnel is that even number closes wave optical signal 2102, Third Road is that odd number closes wave optical signal 2103, the four the tunnel is that even number closes wave optical signal 2104, this four road odd couplings wave optical signal after the optical comb filter 21 of 25GHz closes ripple, forms 160 wavelength X 1 of 25GHz channel spacing again, λ 2, λ 3, λ 4, the wave optical signal that closes of λ 160 is exported.

Claims (2)

1. the non-heat array wave guide grating type wavelength division multiplexer of a passage 50GHz channel spacing, it is characterized in that, comprise 1 * 2 optical comb filter of a 50GHz and two 1 * 40 100GHz Heatless AWG wave filter, described optical comb filter is provided with one road input end and two-way output terminal, its input end is used for input channel, and to be spaced apart the 50GHz wavelength be λ 1, λ 2, λ 3, λ 80 closes wave optical signal, its output terminal forms by the odd and even number partial wave respectively that one road odd number closes wave optical signal and one road even number closes wave optical signal, wherein odd number closes the wave optical signal delivery channel to be spaced apart the 100GHz wavelength is λ 1, λ 3, λ 5, λ 79, and it is 40 single channels by one described 1 * 40 100Hz Heatless AWG wave filter partial wave again that this odd number closes wave optical signal; Even number close the wave optical signal delivery channel be spaced apart the 100GHz wavelength be λ 2, λ 4, λ 6,,,, λ 80, it is 40 single channels by another 100Hz Heatless AWG wave filter partial wave of described 1 * 40 that this even number closes wave optical signal, two 1 * 40 100Hz Heatless AWG wave filter export jointly form the continuous λ 1 of wavelength, λ 2, λ 3,,,, λ 80 channel spacings are 80 single pass light signals of 50GHz; Because light path is reversible, described wavelength continuous channel is spaced apart 80 single pass light signals of 50GHz and divides two groups by odevity, every group is respectively closed ripple by one described 1 * 40 100GHz Heatless AWG wave filter along opposite light path, forming a path channels is spaced apart the 100GHz odd number to close the wave optical signal wavelength is λ 1, λ 3, λ 5, a λ 79 and a path channels are spaced apart the 100GHz even number, and to close the wave optical signal wavelength be λ 2, λ 4, λ 6, λ 80, this odd even two-way closes wave optical signal again after the optical comb filter of 50GHz closes ripple, forms the continuous λ 1 of 80 wavelength of channel spacing of 50GHz, λ 2, λ 3, λ 4, the wave optical signal 1101 that closes of λ 80 is exported.

2. the non-heat array wave guide grating type wavelength division multiplexer of a passage 25GHz channel spacing, it is characterized in that, comprise 1 * 4 optical comb filter of a 25GHz and four 1 * 40 100GHz Heatless AWG wave filter, described optical comb filter is provided with one road input end and four road output terminals, its input end is used for input channel, and to be spaced apart the 25GHz wavelength be λ 1, λ 2, λ 3, λ 160 closes wave optical signal, its output terminal first via is that odd number closes the wave optical signal delivery channel to be spaced apart the 100GHz wavelength be λ 1, λ 5, λ 9, λ 157, the second the tunnel is that even number closes the wave optical signal delivery channel to be spaced apart the 100GHz wavelength be λ 2, λ 6, λ 10, λ 158, Third Road is that odd number closes the wave optical signal delivery channel to be spaced apart the 100GHz wavelength be λ 3, λ 7, λ 11, λ 159, the four the tunnel is that even number closes the wave optical signal delivery channel to be spaced apart the 100GHz wavelength be λ 4, λ 8, λ 12, λ 160, it is 40 single channels by one described 1 * 40 100Hz Heatless AWG wave filter partial wave respectively that wave optical signal is closed on each road, four 1 * 40 100Hz Heatless AWG wave filter is exported formation wavelength continuous channel jointly and is spaced apart 160 single pass light signals of 25GHz, because light path is reversible, these wavelength continuous channels are spaced apart 160 single pass light signals of 25GHz and divide four groups by odevity, every group is respectively closed ripple by one described 1 * 40 100GHz Heatless AWG wave filter along opposite light path, forming the described first via is that odd number closes wave optical signal, the second the tunnel is that even number closes wave optical signal, Third Road is that odd number closes wave optical signal, the four the tunnel is that even number closes wave optical signal, this four road odd couplings wave optical signal after the optical comb filter of described 25GHz closes ripple, forms 160 wavelength X 1 of 25GHz channel spacing again, λ 2, λ 3, λ 4, the wave optical signal that closes of λ 160 is exported.

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