M3,98296 五、新型說明： 【新型所屬之技術領域】 尤才a —種光通信發 本創作係關於-種通信系統 射系統。 【先前技術】 有線電視網路的應用在現代已經越來越為普及，而 為了因應使用者的需求，電視節目也跟著越來越多，隨 著訊號的傳輸量增加以及雙向互動的服務出現，有線電 視網路光纖到府或光纖到關方向發展。 請參閱第1 ’第—圖係為習知技術的光通信系統 架構。於光通信系統1⑽f，發送端具有光發射機11 與12，並分別用以傳輸光信號L1與L2至同調光通信 (Wavelength Division Multiplexing ; WDM)模組 13，接 著，同調光通信模組13會將光信號L1與L2調制成為 混合光信號L3傳輸至接收端主機〗4，以供接收端主機 14自混合光信號L3解調出光信號L4與L5，並供接收 端子機15與16接收。 然而，當光發射機11與12所發射出之光信號L1 與L2之波長差dl小於某個程度時，就會使光通信系統 1〇〇 發生光拍差干擾(Optical Beat Interference ; OBI)現 象，並使接收端主機14所解調出之光信號L4與L5存 在雜訊與底噪，導致系統的訊號雜訊比（Signal-to-noise ratio ; SNR)降低，嚴重時更可能導致光通信系統1⑼ 3 通訊中斷。 【新型内容】 本創作所欲解決之技術問題與目的： 緣此、，摘作之主要目的係提供—種光通信發射系 恭此光通L發射系統係可以分別調整每以光發射機所 ，射之光訊號之波長，藉以增加每—纽號間之波長 差。 本創作解決問題之技術手段： 種光通Μ务射系統係用以發射混合光訊號至接 ί端^機’並包含第—光發射機、第二光發射機與同調 ，通信模組；第-光發射機係具有第—波長控制模組， 錯以調整第-光發射機所發射之第—光訊號之第一波 f一第一光發射機係具有第二波長控制模組，藉以調整 =級射機所發射之第二光訊號之第二波長，且第一 用二波長係具有調制波長差，同調光通信模組係 八光μ 光訊號與第三光訊號，據以調制並發送混 接收端主機；其中當調制波長差大於預設波 訊號與:第二機係將混合光訊號有效解析出第-光 =創作之—較佳實施财，第—波長控制模組係 控制單i改變該第一發射機之内部溫度之第-溫度 ,早疋且第二波長控制模組係具有用以改變該第二 光叙射機之内部溫度之第二溫度控制單元。 本創作對照先前技術之功效： 如地相較m之光通訊线’本創作利餘第一光取 由、與第二光發射機内設置第一波長控制模組與第二 =長控制模組’藉以調整第一光訊號與該第二光訊號； 凋制波長差，進而避免OBI現象發生。 本創作所採用的具體實施例，將藉由以下之實施 及圖式作進一步之說明。 【實施方式】 /本創㈣騎-料信线，尤指—種光通信發 系統=下_舉-較佳實施例以說明本創作，然熟 此項技蟄者皆知此僅為—舉例，而並非用以蚊創作本 身。有關此較佳實施例之内容詳述如下。 請參閱第二®，第二圖係為本創作之光通信發射系 統之架構圖。光通信發㈣統·係用以發射混合光訊 號S3至接收端主機31，光通信發射系統2〇〇並包含 -光發射冑21、第二光發射機2 2肖同調光通信模組^。 第-光發射機21係具有第一波長控制模組2ιι 以調整第-紐射機21所發射之第—光訊號S1之第二 波長，第二光發射機22係具有第二波長控制模組SB , 藉以調整第二光發射機所22發射之第二光訊號§2之 二波長，且第一波長與第二波長係具有調制波長差们。 M398296 同調光通信模組23係用以接收第一光訊號s]與第 二光訊號S2，據以調制並發送混合光訊號S3至接枚端 主機31 ;其中當調制波長差d2大於預設波長差時，接 收端主機31係將混合光訊號S3有效解析出第一光訊號 S1與第二光訊號S2 1並傳送至接收端子機32與33 ;其 中，由於會導致OBI現象發生的波長差臨界值會隨著不 同的光通信發射系統200而改變，因此預設波長差於本 創作中並不加以限制，只要於建構光通信發射系統2〇〇 時先進行模擬或測試，即可對應得到上述預設波長差的 數值；更進一步，此處所述之有效解析係泛指所解析出 之第一光訊號SI與第二光訊號S2之底噪與雜訊在預先 設定之合理範圍内之情況，由於合理範圍會隨廠商或使 用者而定’因此在本創作中亦不加以限制。 請繼續參閱第三圖，第三圖係為雷射發射器溫度與 所發射出之光訊號之光波長位移量關係圖。可以清楚發 現，當雷射發射器之溫度每改變攝氏丨度，光訊號之光 波長即因此改變〇.lnm，因此，於本創作之一較佳實施 例中，係可以於第一波長控制模組21丨内設置一個用以 改變第一光發射機21之内部溫度之第一溫度控制單 元，第一溫度控制單元可以是一個電阻或者其他能夠改 變溫度的裝置；同理，第二波長控制模組221亦可以具 有用以改變第二光發射機22之内部溫度之第二溫度控 制單兀，而第二溫度控制單元亦可已是電阻或者其他能 夠改變溫度的裝置。 6 M398296M3, 98296 V. New description: [New technology field] You Cai a - kind of optical communication. This creation is about the communication system. [Prior Art] The application of cable TV networks has become more and more popular in modern times, and in order to meet the needs of users, TV programs are also increasing. As the transmission of signals increases and two-way interactive services appear, Cable TV network fiber to the government or fiber to the direction of development. Please refer to the 1st's figure for the optical communication system architecture of the prior art. In the optical communication system 1 (10) f, the transmitting end has optical transmitters 11 and 12, and is respectively used for transmitting optical signals L1 and L2 to the Wavelength Division Multiplexing (WDM) module 13, and then, the same optical communication module 13 The optical signals L1 and L2 are modulated into a mixed optical signal L3 and transmitted to the receiving end host 4 for the receiving end host 14 to demodulate the optical signals L4 and L5 from the mixed optical signal L3 and received by the receiving terminal machines 15 and 16. However, when the wavelength difference dl between the optical signals L1 and L2 emitted by the optical transmitters 11 and 12 is less than a certain degree, the optical communication system 1 causes an optical beat interference (OBI) phenomenon. And the optical signal L4 and L5 demodulated by the receiving host 14 have noise and noise, resulting in a lower signal-to-noise ratio (SNR) of the system, which is more likely to cause optical communication. System 1 (9) 3 communication is interrupted. [New content] The technical problems and objectives to be solved by this creative work: For this reason, the main purpose of the abstract is to provide a kind of optical communication transmission system. This optical transmission L transmission system can adjust each optical transmitter separately. The wavelength of the light signal is emitted to increase the wavelength difference between each button. The technical means for solving the problem in this creation: The light communication system is used to transmit the mixed optical signal to the interface, and includes the first optical transmitter, the second optical transmitter and the homology, and the communication module; - the optical transmitter has a first-wavelength control module, and the first wave of the first optical transmitter of the first optical transmitter is adjusted to adjust the first optical signal of the first optical transmitter to have a second wavelength control module, thereby adjusting = the second wavelength of the second optical signal emitted by the classifier, and the first two-wavelength system has a modulation wavelength difference, and the same dimming communication module is an eight-light optical signal and a third optical signal, which are modulated and transmitted The receiving end host; wherein when the modulation wavelength difference is greater than the preset wave signal and: the second machine effectively parses the mixed optical signal out of the first light = creation - better implementation, the first wavelength control module is a control i The first temperature of the internal temperature of the first transmitter is changed, and the second wavelength control module has a second temperature control unit for changing the internal temperature of the second optical reversing machine. This creation compares the effects of the prior art: such as the optical communication line of the ground compared to the m, the first light extraction of the creation, and the setting of the first wavelength control module and the second = long control module in the second optical transmitter. The first optical signal and the second optical signal are adjusted; the wavelength difference is eliminated, thereby preventing the OBI phenomenon from occurring. The specific embodiments used in the present application will be further illustrated by the following embodiments and drawings. [Embodiment] /Ben Chuang (4) riding-material line, especially - optical communication system = lower - lifting - the preferred embodiment to illustrate the creation, but the skilled person knows this is only - for example And not for mosquito creation itself. The contents of this preferred embodiment are detailed below. Please refer to the second®, which is the architectural diagram of the optical communication transmission system of this creation. The optical communication (4) system is configured to transmit the mixed optical signal S3 to the receiving end host 31, and the optical communication transmitting system 2〇〇 includes a light emitting port 21 and a second optical transmitter 2 2 dimming communication module. The first optical transmitter 21 has a first wavelength control module 2 ιιι to adjust the second wavelength of the first optical signal S1 emitted by the first-on-one 21, and the second optical transmitter 22 has a second wavelength control module. SB, by adjusting the wavelength of the second optical signal §2 emitted by the second optical transmitter 22, and the first wavelength and the second wavelength have modulation wavelength differences. The M398296 and the dimming communication module 23 are configured to receive the first optical signal s] and the second optical signal S2, thereby modulating and transmitting the mixed optical signal S3 to the terminal end host 31; wherein when the modulation wavelength difference d2 is greater than the preset wavelength When the difference is small, the receiving end host 31 effectively analyzes the first optical signal S1 and the second optical signal S2 1 and transmits the mixed optical signal S3 to the receiving terminal machines 32 and 33; wherein, the wavelength difference is critical due to the OBI phenomenon. The value will change with different optical communication transmitting systems 200. Therefore, the preset wavelength difference is not limited in the present creation. As long as the simulation or test is performed when constructing the optical communication transmitting system 2, the corresponding The value of the preset wavelength difference; further, the effective resolution described herein generally refers to the case where the noise and noise of the first optical signal SI and the second optical signal S2 are within a predetermined reasonable range. Since the reasonable range will depend on the manufacturer or user, there is no restriction in this creation. Please continue to refer to the third diagram. The third diagram is the relationship between the laser emitter temperature and the wavelength shift of the emitted optical signal. It can be clearly seen that when the temperature of the laser emitter changes the Celsius temperature, the wavelength of the light of the optical signal is thus changed by 〇.lnm. Therefore, in a preferred embodiment of the present invention, the mode can be controlled at the first wavelength. A first temperature control unit for changing the internal temperature of the first optical transmitter 21 is disposed in the group 21, and the first temperature control unit may be a resistor or other device capable of changing the temperature; similarly, the second wavelength control mode Group 221 can also have a second temperature control unit for varying the internal temperature of second optical transmitter 22, and the second temperature control unit can also be a resistor or other device capable of changing temperature. 6 M398296
相車父於習知之光通訊系統，本創作利用於第一光發 射機2丄與第二光發射機22内設置第—波長控制模組 211與第二波長控制模組221，因此，第一光發射機u 與第二光發射機22僅需藉由發送命令或改變傳送至第 -溫度控制單it與第二溫度控制單元的電流，即可輕易 改變第一光發射機21與第二光發射機22之内部溫度， 並進而調整第-光訊號s!與第二光訊號幻間之調^波 長差d2,如此一來即可避免ΟΒΙ現象的發生。 彳 藉由上述之本創作實施例可知，本創作確具產 之利用價值。惟以上之實施例說明’僅為本創作之車: 實施例說明’舉凡所屬技術領域中具有通常知識者$ 依據本創作之上述實施例說明而作其它種種之: 變化。㈣這些依據本創作實關所作的 化，當仍屬於本創作之創作精神及狀之專利範=支 【圖式簡單說明】In the optical communication system of the familiar light, the present invention utilizes the first optical transmitter 2 and the second optical transmitter 22 to provide the first wavelength control module 211 and the second wavelength control module 221, therefore, the first The optical transmitter u and the second optical transmitter 22 can easily change the first optical transmitter 21 and the second optical only by transmitting a command or changing the current transmitted to the first temperature control unit it and the second temperature control unit. The internal temperature of the transmitter 22, and further adjust the wavelength difference d2 between the first optical signal s! and the second optical signal, so that the occurrence of the chirp phenomenon can be avoided.藉 According to the above-described embodiment of the creation, the creation of the creation is indeed of value. However, the above description of the embodiments is merely a car of the present invention: a description of the embodiments is made by those of ordinary skill in the art, and other various modifications are made in accordance with the above-described embodiments of the present invention. (4) These are based on the actualization of this creation, and still belong to the creative spirit of the creation and the patent of the creation = support [simplified description]
第一圖係為f知技術的光通信祕架構； 第二圖係為本創作之光通信發射系 統之架構圖.The first picture is the optical communication secret architecture of the technology, and the second picture is the architecture diagram of the optical communication transmission system of the creation.
圖係為雷射發射器溫度與所發射出之先訊 光波長位移量關係圖。 號之 【主要元件符號說明】 光通信系統100 7 M398296 光發射機11、12 同調光通信模組13 接收端主機14 接收端子機〗5、16 光信號 U、L2、L4、L5 混合光信號L3 波長差d 1 光通信發射系統200 第一光發射機21 第一波長控制模組211 第二光發射機22 第二波長控制模組221 同調光通信模組23 接收端主機31 接收端子機32、33 第一光訊號S1 第二光訊號S2 混合光訊號S3 調制波長差d2 8The graph is a plot of the temperature of the laser emitter and the amount of wavelength shift of the emitted light. No. [Main component symbol description] Optical communication system 100 7 M398296 Optical transmitter 11, 12 Same dimming communication module 13 Receiving end host 14 Receiving terminal machine 〗 5, 16 Optical signal U, L2, L4, L5 Mixed optical signal L3 Wavelength difference d 1 optical communication transmitting system 200 first optical transmitter 21 first wavelength control module 211 second optical transmitter 22 second wavelength control module 221 same dimming communication module 23 receiving end host 31 receiving terminal machine 32, 33 First optical signal S1 Second optical signal S2 Mixed optical signal S3 Modulation wavelength difference d2 8