S. Ysksi et al., 200-MB S/CH 100-M OPTICAL SUBSYSTEM INTERCONNECTIONS USING 8-CHANNEL 1.3-MU-M LASER-DIODE ARRAYS AND SINGLE-MODE FIBER ARRAYS/, Journal of lightwave technology, 12(2), 1994, pp. 260-270
Synchronous parallel optical-fiber transmission is an attractive metho
d for providing increased interconnection throughput and higher densit
y in advanced information systems. Skew suppression (reducing transmis
sion delay time variation), error-free fully DC-coupled data transmiss
ion capability, compactness, and low power consumption of modules are
important requirements. In order to meet these requirements, we develo
ped optical subsystem interconnections using long-wavelength laser dio
de arrays and single-mode fiber arrays. The major design criteria are
discussed, especially as they are related to skew due to laser diode t
urn-on delay and receiver input optical power variation. The use of lo
w-threshold-current laser diode arrays is an important design requirem
ent. Based on the design criteria discussed in this work, we demonstra
ted 8-channel 200-Mb/s/ch 100-m transmission using compact (0.18 cc/ch
/module), low power (total 280 mW/ch), fully integrated transmitter an
d receiver modules with an ECL (emitter coupled logic) interface. Thes
e modules include our new laser diode arrays with low threshold curren
t of 3.2 mA. Performance results showed that these modules are very ef
fective as interconnections between synchronously operating subsystems
.