Li Yuncong was the same as Li Jian, he had just made a decision, because he had been studying the foreign books brought back by Li Jian recently, so he had a great interest in multi-light conduction, and he had already gone to the light conduction laboratory on the third floor without waiting for the squad leader to ask for instructions.

The name of the tutor of light conduction is Jiang Sicheng, who is wearing a somewhat shabby white coat at the moment, wrapping his hair in a white hat, and looking at Li Jian with two small eyes exposed behind the glasses, and letting his students who are doing chores tell Li Jian to work.

The juniors and seniors can only do chores here, not to mention students like Li Jian and Li Yuncong, who have just stepped into the campus and have no understanding of light conduction.

Li Jian is already very familiar with the name Jiang Sicheng, in those foreign books for Li Yuncong, the book on light conduction has a Chinese translation, the translator is the one in front of him, of course, Li Jiande has another basic light conduction book in his head, and the author has the name of the person in front of him without exception.

Watching Jiang Sicheng carefully use a liquid of unknown material on the outside of an optical fiber the thickness of a human hair, Li Jian knew that he was preparing to experiment on the probability of error in the light conduction transmission of this optical fiber.

The original electronic engineering department optical signal detector only one, and it is an old model imported a few years ago, the error detection rate is limited by the conditions at that time, can only reach 0.2db/KM, Jiang Sicheng wants to experiment whether the new optical fiber material can reduce the error rate, but there is no suitable testing equipment.

Therefore, when he heard that the new laboratory equipment provided by Qianghua arrived, Jiang Sicheng was the first to raise his hands to agree, and he waited for the new equipment for an unknown amount of time, but the department was short of funds, and there were several project teams waiting at the same time, and they did not know that the Year of the Monkey would be able to implement it.

"Li Jian, you go and clean these film containers, although Qianghua provided experimental instruments, what can be reused is still reused, don't let people say that we don't know how to save."

A thin senior brother hid behind the white coat, pointed to some containers for Li Jian to clean, according to normal operation, if there are conditions, the debugging container of this coating material can be completely disposable, but in the current experimental conditions, this kind of container costs a few cents, and the project team is reluctant to let them play the glorious mission at one time.

"Okay."

Li Jianben wanted to remind Jiang Sicheng, and remembered that Jiang Sicheng wrote in one of his books that when he studied the effects of different coatings of quartz fibers on light loss, he mentioned that because there was still a small amount of residue after the coating container was cleaned, he obtained inaccurate data during an experiment, but he could not restore the data afterwards, and this problem bothered him for a year.

After cleaning the container, Li Jian returned to the laboratory, Li Yuncong no longer knew what he was instructed to do, and four or five senior brothers with white coats were all around Jiang Sicheng, carefully not daring to speak, for fear of disturbing Jiang Sicheng's next move.

The optical fiber has been successfully membraned, Jiang Sicheng's hands are very skillful, and he can perfectly complete the action that should be operated by the machine with two hands.

The two ends of the optical fiber are connected to the light source and the light detector respectively, Li Jian saw that this is a very old infrared light source, the original color of the fuselage has been worn and mottled, and the leaked part reflects the mirror-like light, this kind of very fine instrument can be ground into this shape, enough to see how high the frequency of use is.

The other end of the optical fiber is a brand-new optical signal detector, the white nameplate is engraved with English letters, and the numbers on a small LCD screen are constantly beating, Jiang Sicheng's eyes are staring at the screen, his right hand is clenched into a fist, and it seems that his heart is also jumping up and down with the numbers.

"Mr. Jiang, it's done, it's done, it's 0.19db/KM, which is 0.01 lower than the original standard, which shows that it has an effect."

The senior brother who asked Li Jian to brush the container seemed to be the most qualified one of the people present, and after seeing the data, he shouted excitedly, scientific research workers, isn't this day what they are waiting for, if there is any breakthrough, it is to find the way forward, a little bit of accumulation, a little bit of accumulation, there will always be a day from quantitative change to qualitative change.

"No, I was so coincidentally bumped."

Li Jian heard the 0.19, remembered the data mentioned in Jiang Sicheng's book, it seemed to be the 0.01 decreased, looking up, Jiang Sicheng's face was flushed, and he seemed to be excited, but he didn't speak, as if the feelings that had been suppressed for a long time could not be vented.

Presumably he has been studying this quartz fiber and film for a long time, and has not been verified, today he held back his strength, and finally got what he wanted, this kind of technical nerd's feelings for technology, very understandable, but Li Jian himself is also a technical nerd, knowing that he can't touch his moldy head at this time, and the technical nerd also has a temper.

"Record the data from this test, extend the fiber length, and review the data."

After waiting for a long time, Jiang Sicheng recovered from the excitement, but he did not let it go down to celebrate, but immediately carried out a second review, science needs to be tested after thousands of repetitions, and it cannot be tested, that is, an accidental event, a small probability event can not be ignored, and a report without repeated argumentation in practice will be published, in case something really goes wrong, it will be a slap in the face.

"Teacher Jiang, there's no need to extend it, let's just retest it now."

The senior brother looked at Jiang Sicheng,

"If you don't wait for tomorrow, Mr. Jiang, you haven't taken a break since you did the experiment in the morning, don't get tired of your body, even if you have research results, no one will be able to turn him into a paper."

"It's okay, I'm not tired, you use this fiber to do a test, the data is recorded, extension is a must be done, the attenuation degree is reduced by 0.01 in a short distance, if it is really extended, the attenuation degree remains unchanged, it is possible to maintain this attenuation degree in long-distance transmission, you must know that the real application, there must be a distance of tens of kilometers or even hundreds of kilometers."

Jiang Sicheng immediately turned around and was about to continue to prepare the material for elongating the optical fiber, Li Jian quietly approached the senior brother, and peeked at the name of the optical fiber and membrane on the experimental record book, and sure enough, it was the kind of material written in Jiang Sicheng's book that had bothered him for a year.

"Senior brother, does this attenuation degree mean attenuation during signal transmission, then add an amplifier in the middle to resist attenuation."

Li Jian pretended not to understand anything about this and raised his inner questions, and the senior brother really made a record while explaining it to Li Jian as a teacher.

"The idea of optical amplifier has been put forward very early, but if you want to achieve light amplification, you must find the right material, not to mention how many metal elements can be used on the periodic table of light elements, in addition to countless compounds and synthetic materials, you have to try the same, just to integrate them into quartz fiber is to do a lifetime of work, our country has a thin foundation, if you want to make a breakthrough quickly, you can only start from the fusion of fiber and film."

Li Jian looked back at Jiang Sicheng, and did not say anything about what the senior brother who didn't know his name said, and he agreed with it, there is no way to accumulate in China at present, and if you want to achieve some scientific research results, you can only do it from a relatively simple field, otherwise the material cost of the experiment alone will be enough to drag down the entire light conduction project team.

"In fact, rare earth elements themselves have certain luminescent properties, and lanthanide metals are used in the manufacture of fluorescent materials, and rare earth ores themselves are symbiotic with quartz ores, so why not try to add rare earth metals to quartz crystals for drawing?"

Li Jian said in a loud voice, and when the eyes of the whole laboratory gathered, he continued,

"It is said that Anampton is preparing to do research in this area, and a friend who sent me information abroad told me."

After Li Jian finished talking about Anampton, he secretly looked at Jiang Sicheng with his spare eyes, and sure enough, the big man in the optoelectronic communication industry quietly frowned, Li Jian also remembered Jiang Sicheng's things just now, and went to the book where Jiang Sicheng occasionally mentioned his own experience, and it was not long to mention that he had made achievements in Anampton but was not recognized, which was also the reason for Jiang Sicheng's return to China.