What is the expected growth rate for LoRa revenue in China this year 
ge, you need to have a increase in power to get to more distance as you have a higher bandwidth there. Typically, those radios are going to be more powerful and therefore I think potentially more dangerous. And I think one of the things we expect is most phones, whereas the attach rate today of proximity sensing for SAR functionality is fairly, you know, not so high. I think for 5G phones, it's going to be much higher. And so that's really a good opportunity for us.
In addition, for protection. So that's for proximity sensing and from a protection standpoint, we see the same type of improvements required, high speed interfaces, more advanced processes, different displays requiring protection. And it's just a more challenging environment as everything is faster and more -- has more advanced lithography, so more advanced displays. So, again, protection and proximity sensing, we expect to do quite well going forward due to 5G also.
Tristan Gerra -- Baird -- Analyst
Great. And then last one, in terms of the growth for LoRa that you see for this year. How should we model China? I thought China would have decline as a percentage of total LoRa revenue. Do you actually expect China to be flat to up year-over-year this year? Or is the new target embedding China to be down year-over-year?
Mohan Maheswaran -- President and Chief Executive Officer
I would think that China would be maybe slightly up year-over-year, Tristan but I think we did anticipate it would be a much higher growth this year to be fair, as we planned over the year, a lot of the growth we did expect from China. But I make the comment on the opportunities being more balanced just for that reason. We just don't know where this whole tariff thing is going to lead to and those type of things. And, you know, one of the things we pride ourselves on is having geographical balance and end market balance. And this is one of the reasons, it's that we can't predict what's going to happen regionally. All we know is we have very good momentum also in North America. We have very good momentum in Europe. But yeah, for this year, the projection was that China would be growing faster and I think it's going to be fairly muted growth.
Tristan Gerra -- Baird -- Analyst
Okay, great. Very useful. Thank you.
Operator
Our next question comes from line of Karl Ackerman with Cowen and Company. Proceed with your question.
Karl Ackerman -- Cowen and Company -- Analyst
Hey, good afternoon. Emeka or Mohan, your comments on China PON demand largely echo peers who have reported already. But I think you sound a little bit more optimistic on 100 gig optical components than peers. So what are you seeing here in terms of bookings for 100 gigs for the second half of the year? And, how should we think about the opportunity for your PON business as 5G ramps later this year?
Mohan Maheswaran -- President and Chief Executive Officer
Karl, I think the -- so separate PON from data center. So there's really two markets we're playing. PON is the one that's majority China, mostly China driven, mostly today 2.5 gig and 1 gig PON. We are seeing growth in 10 gig deployments. The challenge for us with PON is that, Huawei has really been one of the key drivers of that business in China and obviously with the Huawei ban that puts some challenges around that business. In addition to that, China has been the main region for PON deployments. There are other regions deploying, but China has been the -- by far the highest volume. And so you combine the slightly modest investments in -- reduction in investments by the China government in PON and then combine that with Huawei ban that puts really a headwind on PON business.
Now, separate that from the data center business. The data center business we've talked about inventory builds in Q4 and Q1. We started to see that free up now in Q2, started to get more balanced and we expect the rest of this year to be a little bit better for data center and most of those 100 gig, 4x25 gig and IC optical module deployments. And so that's where we see the benefit there on our CDRs.
Kar
ge, you need to have a increase in power to get to more distance as you have a higher bandwidth there. Typically, those radios are going to be more powerful and therefore I think potentially more dangerous. And I think one of the things we expect is most phones, whereas the attach rate today of proximity sensing for SAR functionality is fairly, you know, not so high. I think for 5G phones, it's going to be much higher. And so that's really a good opportunity for us.
In addition, for protection. So that's for proximity sensing and from a protection standpoint, we see the same type of improvements required, high speed interfaces, more advanced processes, different displays requiring protection. And it's just a more challenging environment as everything is faster and more -- has more advanced lithography, so more advanced displays. So, again, protection and proximity sensing, we expect to do quite well going forward due to 5G also.
Tristan Gerra -- Baird -- Analyst
Great. And then last one, in terms of the growth for LoRa that you see for this year. How should we model China? I thought China would have decline as a percentage of total LoRa revenue. Do you actually expect China to be flat to up year-over-year this year? Or is the new target embedding China to be down year-over-year?
Mohan Maheswaran -- President and Chief Executive Officer
I would think that China would be maybe slightly up year-over-year, Tristan but I think we did anticipate it would be a much higher growth this year to be fair, as we planned over the year, a lot of the growth we did expect from China. But I make the comment on the opportunities being more balanced just for that reason. We just don't know where this whole tariff thing is going to lead to and those type of things. And, you know, one of the things we pride ourselves on is having geographical balance and end market balance. And this is one of the reasons, it's that we can't predict what's going to happen regionally. All we know is we have very good momentum also in North America. We have very good momentum in Europe. But yeah, for this year, the projection was that China would be growing faster and I think it's going to be fairly muted growth.
Tristan Gerra -- Baird -- Analyst
Okay, great. Very useful. Thank you.
Operator
 Our next question comes from line of Karl Ackerman with Cowen and Company. Proceed with your question.
Karl Ackerman -- Cowen and Company -- Analyst
Hey, good afternoon. Emeka or Mohan, your comments on China PON demand largely echo peers who have reported already. But I think you sound a little bit more optimistic on 100 gig optical components than peers. So what are you seeing here in terms of bookings for 100 gigs for the second half of the year? And, how should we think about the opportunity for your PON business as 5G ramps later this year?
Mohan Maheswaran -- President and Chief Executive Officer
Karl, I think the -- so separate PON from data center. So there's really two markets we're playing. PON is the one that's majority China, mostly China driven, mostly today 2.5 gig and 1 gig PON. We are seeing growth in 10 gig deployments. The challenge for us with PON is that, Huawei has really been one of the key drivers of that business in China and obviously with the Huawei ban that puts some challenges around that business. In addition to that, China has been the main region for PON deployments. There are other regions deploying, but China has been the -- by far the highest volume. And so you combine the slightly modest investments in -- reduction in investments by the China government in PON and then combine that with Huawei ban that puts really a headwind on PON business.
Now, separate that from the data center business. The data center business we've talked about inventory builds in Q4 and Q1. We started to see that free up now in Q2, started to get more balanced and we expect the rest of this year to be a little bit better for data center and most of those 100 gig, 4x25 gig and IC optical module deployments. And so that's where we see the benefit there on our CDRs.
Kar