Optical transmission is becoming common medium for high-speed transmission in the market of datacom, telecom and consumer electronics. There are several types of optical transmission such as embedded optics (On Board Optics, Co-packaged Optics, Near-packaged Optics), Pluggable optics and Active optical cables. They are mainly based on glass or silicon materials.
However, based on polymer technologies, Nitto has been developing new and unique types of optical transmission products, Plastic Optical Fiber and Optical waveguide with Flexible printed circuit (OFPC).
For existing and emerging market requirements, Nitto continues developing total solutions regarding optical transmission.
In this presentation, several values for many markets by using our polymer-based transmission medium will be explained.
A graded-index plastic optical fiber (GI POF) with a high bandwidth and flexibility is expected to be a transmission medium for short-reach communication in home networks. However, the pluggable interconnects for consumers have not been emerged. Recently, we have developed ballpoint-pen interconnects where ball lens can be precisely mounted on GI POF end face using ballpoint-pen production technology, enabling easy connection, low-cost production, and fiber end face protection of GI POFs. Here, data transmission quality through coupled GI POFs with the ballpoint-pen connector is investigated. For evaluating data transmission quality, we measured bit error rate versus received optical power (BER curve) for a connector separation of 1.5 mm in the ballpoint-pen interconnect. The result shows error-free transmission (BER<10-12) was achieved by using the ballpoint-pen interconnect whereas transmission quality was significantly deteriorated by using the butt-coupling which is generally physically-contacted without fiber separations. This achievement with the ballpoint-pen interconnect may result from little dependence of the coupling loss on the connector separation because of the collimated output beam from GI POF with the ballpoint-pen connector. Furthermore, even for same received optical powers in the BER curve, the butt-coupling has worse transmission quality than the ballpoint-pen interconnect. This may result from some noises such as modal noise which occurs in multimode fiber connection as fluctuations of the coupling power. These results suggest that the ballpoint-pen interconnect is suitable for a consumer applications where the pluggable interconnects are essential. In the conference, the connector separation dependence of transmission quality through ballpoint-pen interconnect will be discussed.
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