Multi form pluggable 8-channel Tx/Rx module for OC-3/OC-12

Tamanuki, Takemasa; Shao, Zhenhua; Huang, Nick; Keller, Chris G.; Itô, Makoto

doi:10.1109/leos.2003.1252927

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A multi-channel optical transceiver (TRx) is an attractive way to solve these problems [1,2]. However, high density packaging of a transmitter (Tx) and a receiver (Rx) in a small package has proved difficult for practical use in the above optical networks because of the electrical and optical crosstalk between Tx and Rx and the difficulty of employing individual APC (Automatic Power Control) to each Tx channel.…”

Section: Introductionmentioning

confidence: 99%

High Density Packaged 4-Channel Transceiver for Metro and Access Applications

Tamanuki¹,

Shao²,

Huang³

et al. 2005

Proceedings Electronic Components and Technology, 2005. ECTC '05.

Self Cite

View full text Add to dashboard Cite

A high density packaged 4-channel optical transceiver using a 1310 nm FP-LD array and a PD array has been newly developed for OC-3, OC-12, Gig-E and Fiber Channel intermediate reach applications. The output optical power of each of the four LDs is independently controlled by Automatic Power Control (APC). Both module package size and power consumption can be reduced by less than half when compared to the use of four conventional single-channel Small Form Factor Pluggable (SFP) modules. IntroductionThe router or switch equipment for Metro or Access optical networks are being required to have larger throughput and larger capacity to meet growing broadband communication needs of the next generation systems. To meet these requirements, there is a need for more optical ports per system. However, current line cards are reaching the limit on the number of ports per board because of the size of the single channel transceivers (i.e. SFP, SFF or GBIC). Currently system vendors are placing as many as 48 ports per line card. As the number of ports increases the demand of lower power consumption becomes critical to the system performance and cost.A multi-channel optical transceiver (TRx) is an attractive way to solve these problems [1, 2]. However, high density packaging of a transmitter (Tx) and a receiver (Rx) in a small package has proved difficult for practical use in the above optical networks because of the electrical and optical crosstalk between Tx and Rx and the difficulty of employing individual APC (Automatic Power Control) to each Tx channel.In this paper, we described a high density packaged 4-channel optical TRx module that can meet OC-3/12 Intermediate Reach (IR-1) and the Gigabit Ethernet 1000Base LX requirements. The electrical crosstalk was suppressed by employing a newly designed quad LD driver IC and a printed circuit board (PCB) where electrical circuits of Tx and Rx were isolated. The optical circuit integrated with an LD array, a PD array, a monitor PD array and a SMF array was also newly developed to monitor individual LD optical power for APC and to reduce the electrical and optical crosstalk. Our 4-channel TRx can increase packaging density by 60 % and reduce power consumption by 50 % compared to the use of four conventional SFP modules.

show abstract

Section: Introductionmentioning

confidence: 99%