Growth predicted in WDM equipment

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pling to t h e single-mode fibre.

Foundry service for analog chips

in t h e post-deadline p a p e r o f

As t h e result of a d o p t i n g this

Zarlink S e m i c o n d u c t o r is claim-

t h e IEEE / LEOS2002 A n n u a l

structure, internal loss r e d u c e s

ing t h e world's m o s t cost-effec-

Meeting held in Glasgow. High-

to two-thirds of t h e c o n v e n t i o n -

tive and a d v a n c e d c o m m e r c i a l

p o w e r laser diode d e v e l o p e d

al diodes, while p o w e r efficien-

f o u n d r y service for p r o d u c i n g

by Anritsu C o r p o r a t i o n e m p l o y s

cy increases greatly. For

high-voltage, h i g h - s p e e d analog

an a s y m m e t r i c cladding layer

instance, t h e c o n v e n t i o n a l

chips.

s t r u c t u r e . T h e n-type cladding

s t r u c t u r e c o n s u m e s 5.1 W to

H i g h - p o w e r laser diodes for t h e

layer o u t of b o t h p- a n d n-type

obtain a 500 m W fibre o u t p u t ,

14xx-nm b a n d are u s e d in t h e

of t h e layers s a n d w i c h i n g t h e

w h e r e a s , o u r n e w diodes suc-

p u m p laser m o d u l e for EDFA

active layer h a s b e e n c h a n g e d

cessfully r e d u c e s t h e p o w e r

that is i n d i s p e n s a b l e for W D M

from t h e c o n v e n t i o n a l InP to

c o n s u m p t i o n to 3.3W (35%

optical e o m m s y s t e m a n d for

InGaAsP c o m p o u n d that h a s a

reduction). M a x i m u m o u t p u t

R a m a n fibre amplifiers to be

slightly h i g h e r refractive index.

p o w e r e x c e e d i n g 1W w i t h t h e

e x p l o i t e d in t h e next-genera-

This n e w s t r u c t u r e c a n mini-

3-mm-long c h i p - world's high-

tion long-haul a n d high-capaci-

mize a b s o r p t i o n loss in t h e p-

est-level o u t p u t characteristics -

Drawing o n its e x p e r t i s e in

ty c o m m u n i c a t i o n system.

side cladding layer, w h i c h is

has also b e e n a c c o m p l i s h e d . A

c o m p l e m e n t a r y silicon bipolar

Anritsu's n e w h i g h - p o w e r laser

m a i n c a u s e o f internal loss, by

single unit u s i n g t h e n e w diode

technology, Zarlink h a s

diode e m p l o y s t h e a s y m m e t r i c

shifting t h e g u i d e d w a v e field

can p r o v i d e t h e required out-

d e s i g n e d and fully qualified a

cladding layer s t r u c t u r e utiliz-

distribution in t h e laser cavity

p u t p o w e r that u s e d to be sup-

ing t h e InGaAsP h a v i n g a h i g h

to t h c n-cladding direction.This

plied by c o u p l e d o u t p u t s from

refractive i n d e x as its n-

s t r u c t u r e also e n a b l e s w i d e n i n g

t w o c o n v e n t i o n a l p u m p laser

cladding layer.The result is

t h e active layer, resulting in

m o d u l e s . It c a n also d e c r e a s e

innovative.World's highest-level

d e c r e a s e of diode resistance.

t h e n u m b e r of drivers and opti-

o u t p u t p o w e r e x c e e d i n g 1W

T h e result of b o t h i n c r e a s e d

cal c o m p o n e n t s to allow l o w e r

i n d u s t r y ' s first o p e n - m a r k e t

a n d h i g h p o w e r efficiency are

efficiency a n d r e d u c e d drive

total s y s t e m building cost. In

p r o c e s s capable of fabricating

a c h i e v e d by r e d u c i n g t h e inter-

voltage c a n be achieved at t h e

addition, its application to fibre-

this c h a l l e n g i n g class o f c h i p s

nal loss in t h e laser diode. This

s a m e time. Moreover, n a r r o w e r

s e n s o r light s o u r c e including

in all-silicon substrates.All

technological d e v e l o p m e n t

emission beam divergence

strain sensors, w h i c h requires a

o t h e r c o m m e r c i a l facilities u s e

helps reduce power consump-

angle t h a n t h e c o n v e n t i o n a l

h i g h o u t p u t power, is also

m o r e e x p e n s i v e processes,

tion a n d fibre amplifier cost,

o n e a n d almost circular b e a m

expected.

s u c h as GaAs a n d SO1.

Peak performance for laser diodes Anritsu Corp., h a s s u c c e e d e d in

e n a b l i n g to m i n i m i z e t h e net-

s h a p e c a n be obtained, w h i c h

d e v e l o p i n g 14xx (1,400 -

w o r k building cost.

facilitates high-efficiency cou-

1,500)-nm b a n d h i g h - p o w e r laser diodes that have t h e n e w a s y m m e t r i c cladding layer s t r u c t u r e a n d offers w o r l d ' s highest-level o u t p u t p o w e r a n d efficiency.They are mainly u s e d for p u m p i n g optical fibre amplifiers.

Details of this t e c h n o l o g y w e r e

Growth predicted in WDM equipment In its n e w report, "Metro

of Pioneer Consulting,

P e r f o r m a n c e a d v a n c e s in popular c o n s u m e r and t c l e c o m s p r o d u c t s - s u c h as DVD players, digital VCRs, a n d DSL m o d e m s are fuelling d e m a n d for analog d e v i c e s c o m b i n i n g high-voltage o u t p u t s w i t h s p e e d y data rates.

n e w p r o c e s s - called HJV (highp e r f o r m a n c e , p r o c e s s version J, high-voltage) - for high-voltage, h i g h - s p e e d analog chips. With HJV, Zarlink is offering t h e

Dow Corning acquires Sterling Semiconductor D o w C o r n i n g Corp. has

m a n u f a c t u r i n g silicon carbide

CWDM vs. D W D M : A n A s s e s s

"CWDM p r o p o n e n t s are

acquired t h e assets o f Sterling

(SIC), in Danbur}; CT a n d

ment of the Opportunities,

r e p o s i t i o n i n g C W D M in t h e

S e m i c o n d u c t o r Inc. for $11.2

Tampa, FL a n d will hire 32 of

Technology Developments, and

m a r k e t as a low-cost alterna-

million. Financially troubled

Sterling's c u r r e n t e m p l o y e e s .

Business Cycle I m p a c t s o n

tive to m e t r o DWDM for c a s h

Uniroyal T e c h n o l o g i e s h a s b e e n

Global Demand", P i o n e e r

s t r a p p e d c a r r i e r s . W e fully

forced to sell Sterling

Consulting addresses these and

e x p e c t C W D M to a c h i e v e a

S e m i c o n d u c t o r s as part o f its

o t h e r issues in o r d e r to p r o v i d e

m e a s u r e o f s u c c e s s in t h e

C h a p t e r 11 b a n k r u p t c y reorga-

up-to-date a s s e s s m e n t s o f t h e

m e t r o market." Based o n its

nization.

p r o p r i e t a r y d e m a n d model,

U n d e r t h e t e r m s of t h e deal,

tor industry.This i n v e s t m e n t

P i o n e e r p r e d i c t s that world-

D o w C o m i n g will acquire t h e

provides D o w C o r n i n g w i t h a

wide metro WDM equipment

m a n u f a c t u r i n g a n d research

n e w o p p o r t u n i t y to build on its

A c c o r d i n g to Paul Kellett,

sales will g r o w f r o m $ 1.2 b in

a n d d e v e l o p m e n t assets of

core silicon-based t e c h n o l o g y

Senior Director - R e s e a r c h

2001 to $2.3 b n in 2007.

Sterling, an i n d u s t r y leader in

a n d solutions strength.

market o p p o r t u n i t y for m e t r o W D M e q u i p m e n t sales t h r o u g h o u t t h e world.

lll-Vs IIIEVIEIlII TIIE ADVANCED 5EMICONDU(TOR ,MAGAZINE V(]NI.~ - NO ", -JANIIqEB 2oo3

D o w C o r n i n g ' s N e w Ventures Business has b e e n investing in silicon carbide a n d gallium nitride substrate t e c h n o l o g i e s for t h e c o m p o u n d s e m i c o n d u c -